[English transcription of the German audio version.]
Claudius Nießen: Hello and welcome to another episode of our #strawclever podcast. Once again, we’re exploring innovative ways in which Verbio uses locally sourced biomass to support sustainable mobility and supply bio-based raw materials.
In previous episodes, we’ve often discussed renewable fuels and the transformation of the transportation sector. Verbio is an established player in this field and one of the industry’s leading innovators. Now, Verbio is focusing its innovative capabilities on transforming the chemical industry. After all, crude oil isn’t just a fuel source. It’s also used as a raw material for plastics, lubricants, detergents, cleaning products, and much more.
If the chemical industry is to reduce its dependence on fossil raw materials while remaining competitive and viable in the long term here in Europe, it needs new, green solutions. That’s exactly where Verbio comes in. In Bitterfeld, the company has built a plant to produce bio-based specialty chemicals, which is now about to start operations.
Meanwhile, a facility for the industrial production of high-quality specialty catalysts is being built in Hungary. That’s why, alongside Verbio CEO Claus Sauter, we’re joined in the studio today by Dr. Andreas Kohl. He heads Verbio’s new business area, Verbio life chemicals, and will explain which bio-based chemicals will be produced in Bitterfeld, how they’re made, and how the chemical industry can use them.
A warm welcome to both of you, Claus Sauter and Dr. Andreas Kohl. It’s great to have you here in the studio.
Claus Sauter: Hello, and good morning, Mr. Nießen.
Dr. Andreas Kohl: Hello, Mr. Nießen. Thank you for having me.
Claudius Nießen: It’s a pleasure. Mr. Sauter, let’s start with you. Many people associate crude oil primarily with gasoline, diesel, heating oil—you name it. Why doesn’t that tell the whole story?
Claus Sauter: Well, crude oil and products derived from it are everywhere in our daily lives. As you mentioned, crude oil is used to make diesel and gasoline, but its uses go beyond energy production, where it’s burned as fuel. A diesel engine burns fuel to power a vehicle. But crude oil is also probably the most important raw material for everyday products. You’ve already mentioned plastics and lubricants. So much of our modern world depends on lubrication to keep things running. And then there are everyday products, such as the cleaning products we use in our kitchens. So any discussion of sustainability and climate neutrality also needs to consider how crude oil is used as a raw material. Moving away from crude oil isn’t just about diesel and gasoline. It’s also about the raw materials used by the chemical industry, and we need sustainable solutions for those as well. The chemical industry can’t decarbonize. It needs to defossilize. Decarbonization is the wrong term.
Claudius Nießen: In this context.
Claus Sauter: In this context, yes. And when we talk about crude oil, we’re talking about hydrocarbons—in other words, carbon and hydrogen. I don’t want to get too deep into the chemistry.
Claudius Nießen: But could you explain the difference between decarbonization and defossilization?
Claus Sauter: Yes. The chemical industry needs that carbon atom. Carbon is a fundamental building block of organic chemistry, so the industry can’t do without it. When it comes to the energy it uses, the industry can, of course, switch to electricity. But wherever carbon is needed as a raw material—for plastics, lubricants, or cleaning products—it remains essential. And as long as that carbon comes from crude oil, it’s fossil carbon. It needs to be replaced with renewable carbon obtained from plants, for example.
Claudius Nießen: Then it’s no longer fossil carbon.
Claus Sauter: Exactly, then it’s no longer fossil carbon. Verbio can produce these molecules from locally sourced biomass, and those are the bio-based specialty chemicals we’re talking about. Some of the products we make are identical to existing fossil-based counterparts made from crude oil. But we also have entirely new molecules that open up new applications. We’ll talk more about those later.
Claudius Nießen: Dr. Kohl, as our chemist here today, we’ll be counting on you to explain some of this in a little more detail. Mr. Sauter has already touched on the bio-based specialty chemicals you’re producing, and I mentioned them at the start. What exactly are they?
Dr. Andreas Kohl: Let’s take a step back. As we’ve already heard, the chemical industry needs to move away from fossil carbon. That brings us to the concept of renewable carbon—carbon that doesn’t come from crude oil, natural gas, or other fossil raw materials.
Claudius Nießen: Could we also call it a kind of green carbon?
Dr. Andreas Kohl: In Germany, we’d call it green carbon, yes. There aren’t actually that many ways for the chemical industry to keep making its products using green—or non-fossil, renewable—carbon. You can make chemicals from CO₂ and hydrogen, but that’s still at a relatively early stage. Recycling is another option. We’ve been doing that in Germany for quite some time, through the yellow-bag packaging collection system, for example. Polymer recycling is one approach. Then there’s the significant opportunity to use bio-based raw materials, such as vegetable oils. And that’s where Verbio is particularly strong. We already produce a wide range of bio-based products in large volumes. For our new plant, for example, we use European rapeseed oil. It’s an excellent raw material for producing specialty chemicals that the chemical industry can then use to make other products. But what exactly are specialty chemicals? To explain the distinction, there are basic chemicals that don’t have a specific function, and then there are specialty chemicals that do. They bring a particular property to a product. They might create a rich lather in your shampoo or make a surface repel water. That specific effect is what defines a specialty chemical.
Claudius Nießen: So, a particular product property, if you like.
Dr. Andreas Kohl: A particular product property, exactly. And that’s especially apparent in everyday products. Laundry detergents and cleaning products are precisely the kinds of products our bio-based specialty chemicals can contribute to. We’ve also been working for some time with other companies that have a strong presence in this market. One example is Werner & Mertz, the company behind the Frosch brand. They’re very interested in using European raw materials, so this is an excellent opportunity for our two companies to work together.
Claudius Nießen: We’re talking about a relatively new area of the chemical industry in terms of what’s available on the market. Are these products already available in the quantities these companies, or Europe as a whole, need?
Dr. Andreas Kohl: Scaling up is absolutely crucial. In the chemical industry, a technology has limited value if you can’t scale it up. You can serve certain niche markets, but it’s difficult to go beyond that. We can do it, though. We have the technology and the raw material, and we can scale up production. That’s one of the things that makes our technology special.
Claudius Nießen: Mr. Sauter, as I mentioned at the beginning, Verbio has already developed a great deal of technology in the biofuels sector, including fuels made from straw—as the name of this podcast suggests. Are you now extending that pioneering work into bio-based specialty chemicals? What makes this a logical next step for you?
Claus Sauter: When we talk about the energy transition and transformation, we can’t leave out the chemical industry. Verbio is known as a biofuel producer, but that’s not how we define ourselves. We process biomass and turn it into products. Today, most of those products end up being used as fuel. With this new approach, we’re among the first companies to offer the conventional chemical industry alternative raw materials. We’ve always been pioneers—that’s why our motto is “Pioneering green solutions.” Politicians often talk about possible solutions in theory. We’re putting concrete solutions on the table. It will take some time to establish them in the market. But consumers can play a part here, too. Andreas just mentioned Werner & Mertz and its Frosch brand. They make cleaning products, among other things. Like us, they’re a medium-sized business, and a very innovative one. It’s an owner-managed company, and those are the kinds of people we’re working with. Yes, their products cost a little more on store shelves. But anyone who wants to make more sustainable choices in everyday life has an option here—not just when it comes to fuel, but in the future, chemicals as well. Andreas also mentioned functionality. I’m not a chemist, so I always try to explain things in simple terms. Imagine taking the olive oil from your kitchen into the shower and trying to wash with it. You’d make a big mess. Now, no one actually uses olive oil for this; other vegetable oils are used. But that type of raw material is the starting point for shampoo. That’s what we mean by functionality. Chemistry turns that vegetable oil into a cleaning product. That’s the area we want to move into, taking on the risks involved so we can offer products made from biomass—initially rapeseed oil. We’ve always explored new paths. We were there early on when biodiesel was being introduced to the market. Then we built Germany’s first ethanol plant and developed other co-products. We’ve done a great deal of research and developed new solutions. Now comes the logical next step, and it’s a big one: bio-based specialty chemicals. It’s medium-sized businesses like Werner & Mertz and ours that bring these solutions to market and can then push policymakers to act. The solutions exist, and they aren’t that much more expensive. With crude oil prices so high, ours would actually be cheaper at the moment. We’ve been working on this for more than ten years. My fellow Management Board member Theo Niesmann got it started, and now we’re building the first plant on a large industrial scale. We’re also working to convince the major corporations and chemical companies—all those beyond Werner & Mertz—by saying, “Look, we have a solution here.” Now let’s see whether they embrace it.
Claudius Nießen: We’re also talking about independence, not just sustainability.
Claus Sauter: It’s about security of supply and sustainability. The crude oil market we compete with is highly volatile. Crude oil is incredibly expensive, not because there isn’t enough of it, but because supply chains are no longer working. The oil simply isn’t getting here. There’s enough crude oil in the world, but the logistics aren’t working. And that’s why we need to pursue these alternatives.
Claudius Nießen: Before we take a closer look at the chemical industry with Dr. Kohl, I’d like to return to something you mentioned, Mr. Sauter. You said Verbio is known as a biofuel producer. Is this your vision for the company—to become the first green chemical group?
Claus Sauter: We already are. We’re a chemical group, not just a biofuel producer. We use locally sourced biomass. Rapeseed oil can be made into biodiesel and used as fuel, but it can also be used to make chemicals. It’s like wood. I can burn it in the stove to keep my house warm, or I can use it to make a table. That’s what we mean by using it as a raw material. You don’t burn the wood; you make something else from it. And that’s the direction we want to take. Most of the molecules we produce are actually far too valuable simply to be burned. There are other ways to use them, but the conditions have to be right. Ultimately, we need to make money from these products.
Claudius Nießen: Dr. Kohl, let’s talk about those conditions. You don’t have to be a chemist to see that the chemical industry is facing a structural crisis. Here in Germany, particularly high energy costs add to the pressure. Is now the right time for this kind of green, sustainable transformation?
Dr. Andreas Kohl: Claus put it well. I believe that approaches based on renewable, bio-based carbon can offer solutions for the chemical industry and help restore its competitiveness, with a greater focus on producing locally for local markets.
Claudius Nießen: By local, you mean Europe.
Dr. Andreas Kohl: Europe, exactly. Every plant has an optimal geographic range for supplying its products. The future of the chemical industry is likely to lie in producing locally for local markets, rather than having a single plant serve the entire global market. That fits very well with bio-based production, which draws on regional supplies of renewable raw materials. It also addresses precisely these problems: supply chain disruptions and dependence on raw materials we don’t have ourselves. Most of our oil comes from outside Europe. Our gas no longer comes from Europe either. It used to, but that’s much more difficult now, so we have to source it elsewhere. Approaches based on renewable, bio-based carbon can help us avoid that dependence. The problems we’re seeing right now illustrate this clearly. There are forty or fifty chemical plants in the Gulf—and I mean chemical plants, not refineries—that currently can’t operate because they can’t ship their products out.
Claudius Nießen: In the Gulf region?
Dr. Andreas Kohl: In the Gulf region, exactly. Those are precisely the value chains that have been disrupted. If the plants are in Europe, we don’t have that problem. Just to add a little context: that’s the crux of the issue. Over the past thirty or forty years, large-scale chemical production based on crude oil has increasingly moved to where the raw material is. Those plants are now in the Middle East, where they’re affected by this conflict.
Claudius Nießen: Dr. Kohl, the phrase “the Bitterfeld Way” already has another meaning, but let’s take a look inside your new plant in Bitterfeld. I’m afraid we’ll have to get into a little chemistry now, but try to explain it to a beginner like me: which bio-based molecules will you be producing, and why?
Dr. Andreas Kohl: The ethenolysis plant in Bitterfeld will mainly produce two C10 molecules. One is called 1-decene, and the other is 9-DAME. 1-decene is already available on the market, even in large volumes. It’s produced in large, highly complex chemical plants that make eight to ten different products, with 1-decene being one of them. In Bitterfeld, we can produce it as one of just two molecules. It’s used to make high-performance lubricants—for modern engines, wind turbines, and applications in the food industry, for example.
Claudius Nießen: By that, you mean use in the food industry, not in the food itself.
Dr. Andreas Kohl: Exactly, not in the food itself. Think of large production lines for ready-made pizzas, for example. Those systems need lubrication, too, and they require very high-quality lubricants that aren’t derived from crude oil. That’s another application for this approach and this type of product. 9-DAME, meanwhile, is a molecule that isn’t currently available on the market on an industrial scale. We’re the first to bring it to the European market, and we call it a platform molecule. It’s highly versatile and can ultimately be used in cleaning products or bio-based plastics, for example. Both molecules need to undergo further chemical processing before they end up in a finished product, but they’re a good starting point.
Claudius Nießen: You mentioned 9-DAME and C10—a capital C followed by the number ten. What does that stand for? I know C stands for carbon. I could probably work it out, but before I go down the wrong path, why don’t you explain it to us?
Dr. Andreas Kohl: Exactly. C10 simply means ten carbon atoms linked together in a nice, straight chain. For a chemist, that’s always a good thing.
Claudius Nießen: Beautiful, yes.
Dr. Andreas Kohl: But to return to the point, C10 production isn’t that easy to scale up. As I mentioned, it comes from large chemical plants.
Claudius Nießen: So at the moment, it’s essentially a by-product. Not a waste product, but something produced alongside the other products.
Dr. Andreas Kohl: Exactly. It’s a complex plant that produces eight to ten different products, not just one. You have to find a market for all of them; otherwise, the process simply isn’t economically viable.
Claudius Nießen: Okay.
Dr. Andreas Kohl: The situation with 9-DAME is different, but just as interesting, I think. 9-DAME or equivalent products can be, and already are, made from palm kernel oil and coconut oil, for the cleaning products industry, for example. But here, too, they’re produced as a secondary stream. We’re talking about palm kernel oil, a by-product of palm oil production, rather than palm oil itself. These C10 molecules are also found in palm kernel oil and can be used, but production isn’t scalable. You can’t keep planting more palm trees indefinitely whenever you need more of this material. These C10 molecules make up only a very small proportion of palm kernel oil.
Claudius Nießen: And since we were just talking about logistics and sustainability, you won’t find coconuts or palm kernels growing in German fields.
Dr. Andreas Kohl: Exactly. That brings us back to scalability and availability. We can’t grow oil palms here—not yet, and hopefully not anytime soon. The same goes for coconuts. Our approach allows us to use locally available raw materials.
Claudius Nießen: And for a non-chemist like me, what does the finished product look like? How should I picture it?
Dr. Andreas Kohl: Both products are clear, colorless liquids. To look at, they’re actually a little boring.
Claudius Nießen: Well, at least they don’t look dangerous or glow neon green in the dark.
Dr. Andreas Kohl: Exactly. But when you’re selling them, that’s a bit of a shame, because there isn’t much to show people. Still, they’re very special molecules, and that’s what makes them interesting. As I said, they’re liquids, so they’re loaded into large tank containers or tanker trucks and delivered to the customer.
Claudius Nießen: Mr. Sauter, the starting material for these new Verbio products, 1-decene and 9-DAME, is rapeseed methyl ester. Don’t worry, I haven’t been secretly studying. I wrote that down. But that’s essentially your biodiesel, isn’t it?
Claus Sauter: Yes, exactly. The raw material comes from those bright yellow fields you see in May. That’s rapeseed, which produces little black seeds. We extract oil from them. Rapeseed oil consists of carbon, hydrogen, and oxygen. If you look at its chemical structure, you’ll see the carbon chains Andreas described. We then turn that oil into what the oil industry calls biodiesel. We call it rapeseed methyl ester, or RME. And that RME is the starting material for the chemical plant. That’s why the chemical plant is located at the same site as the RME plant.
Claudius Nießen: And that’s why you were talking earlier about using it as a raw material rather than simply burning it.
Claus Sauter: Absolutely, yes. This is the next step in turning it into higher-value products, and it’s a step we need to take as a society. Andreas covers the technical aspects. I tend to look at the broader picture. You keep mentioning sustainability, but that term has become a bit worn out. In many cases, this shift toward sustainability gets blamed for society’s problems. That’s not the case—quite the opposite. Consumers can help keep value creation here at home. When we import crude oil or natural gas, large sums of money leave the country. Here, we have the entire value chain, from farmers to us and on to the industries that process our products further. I keep coming back to Werner & Mertz and its Frosch brand: I can buy those products in a store and know that the money stays in the country. So consumers need to think about this, too. We all need to consider our own part in it.
Claudius Nießen: I just wanted to clarify one thing, Mr. Sauter. Rapeseed methyl ester is biodiesel. But you’re not taking this step because you’re thinking, “I can’t find buyers for my biodiesel,” are you?
Claus Sauter: No, our biodiesel is actually selling very well. This is the next stage of development. The world doesn’t stand still. Others are moving forward. If we want to stay ahead, we need to develop new things and explore new paths. And that’s exactly what we’re doing here. It’s simply the next step. As a society, we need to work together and be innovative. That’s the only way we have a chance, and this is our contribution. In the future, we intend to direct more and more of our rapeseed methyl ester into the chemical industry instead of selling it as biodiesel to be burned. That will allow us to produce sustainable, local products with a reliable supply. And that requires a broad movement across society.
Claudius Nießen: Movements like that gain traction when people understand what’s being done. Dr. Kohl, how does this actually work? We have the rapeseed methyl ester. How does it become a specialty chemical?
Dr. Andreas Kohl: Let’s start one step earlier, with something we all know and can buy in a store: rapeseed oil. We buy rapeseed oil and first turn it into rapeseed methyl ester, our biodiesel. That process also yields other products, such as glycerin and phytosterols. These are used in pharmaceuticals, animal feed, and food products. Then comes the next step, as Claus described. The ethenolysis plant is right next to the biodiesel plant. The RME flows through a pipeline into the ethenolysis plant, where a catalyst converts it into those two C10 molecules. The reaction is called metathesis. It’s still relatively new in chemistry and allows us to make that split in a very controlled way, producing the two C10 molecules. It’s a highly innovative process. The Nobel Prize in Chemistry was awarded for it in 2005.
Claudius Nießen: Okay, so metathesis really is that recent.
Claus Sauter: Yes, exactly. This reaction doesn’t occur in nature. We’re investing a lot of money in this, almost a hundred million euros. And to make it possible, you need a catalyst. That catalyst is produced at a plant in Hungary. So, what is a catalyst? It’s what makes a reaction like this possible in the first place. Imagine you want to get to know someone, but you’re feeling a little shy. Okay? So you have a glass of wine—a little alcohol to help you relax.
Claudius Nießen: It lowers your barrier.
Claus Sauter: Exactly. That’s precisely what the catalyst does. It lowers the barrier.
Claudius Nießen: Okay.
Claus Sauter: And suddenly, it’s much easier to approach other people. Now, it doesn’t work for everyone, but it works for most people. You feel a little more relaxed. It lowers the barrier, and you make your move. That’s a catalyst.
Claudius Nießen: So too much catalyst probably isn’t a good thing either.
Claus Sauter: Maybe the analogy isn’t perfect, but if you use the right amount, you get the desired effect. That’s part of what makes this so innovative. It certainly isn’t simple. Even so, we’re taking it on because, as I said, it’s the logical next step. And we need to take that step if we want to keep moving forward.
Claudius Nießen: And you’re not exactly known for enjoying spending money, so it must make financial sense to you.
Claus Sauter: Yes, people like to use the grand term “first-mover advantage.” And certainly, when a market gets going, being among the first gives you a longer window to make good money. Once it becomes standard practice, that changes. But it’s not that simple. We’re investing a great deal of money, and it takes an enormous amount of work. We’ve spent years making the chemical industry aware of what’s coming and what we’re planning to do. It’s a huge undertaking. But we keep coming back to the same point: someone has to do it, so let’s take that step. And I firmly believe now is the right time. For years, issues like security of supply barely figured in our thinking. We assumed the oil would keep arriving and the natural gas would keep flowing through the pipelines. Over the past four or five years, we’ve had to recognize that we can no longer take that for granted. That’s why we need innovative local solutions.
Claudius Nießen: “Someone has to do it,” as Claus Sauter just said. Dr. Kohl, I think that brings us back to you. As we mentioned, this work on metathesis earned the Nobel Prize in Chemistry in 2005. How has Verbio built on that work with innovations of its own?
Dr. Andreas Kohl: Yes, Richard Schrock and his fellow laureates received the Nobel Prize in 2005 for their work on metathesis. A Nobel Prize recognizes an invention or a scientific discovery. Innovation is the next step: turning that invention into a practical application and ultimately into a business model for a company. That’s what we’re doing. We’re taking the scientific achievement recognized by the Nobel Prize and putting it into practice. At the research stage, these catalysts were produced in milligram quantities to demonstrate how they worked. Imagine a tiny amount of salt, not even half the amount you’d put on the tip of a knife, just two or three grains. That gives you an idea of a milligram. But we need much larger quantities of the catalyst, so once again, we have to scale up. The challenge is to take something produced only in milligrams and manufacture it in kilograms or metric tons. That’s what we’ve been working on for a very long time. It also makes the economics much more favorable, of course. Producing milligram quantities is very expensive. We need a catalyst that’s viable for practical use. We’re using what are known as Schrock catalysts, a particular type of metathesis catalyst. This is the first time they’ve been used industrially at this scale for this application. It’s about taking something from a tiny laboratory scale through to a product and a practical use. That’s something Verbio does very well. It involves many people across the company, from scientists and engineers to the teams developing the process, implementing it, and building the plant. All of that matters, and all of it is part of innovation.
Claudius Nießen: Earlier, I asked about C10 and 9-DAME, and you said they’re simply clear liquids.
Dr. Andreas Kohl: Yes, exactly.
Claudius Nießen: A little boring to look at. Mr. Sauter has already gone out on a limb and said the catalyst is a white powder.
Dr. Andreas Kohl: We have a whole range of these catalysts, and for someone selling them, they’re a dream. They have beautiful colors: yellow, orange, a really rich, deep orange, shades of brown, and so on. The color varies depending on the catalyst and the specific metathesis reaction it’s used for.
Claudius Nießen: And if I understand correctly, you don’t buy these catalysts from an outside supplier. You make them yourselves, too.
Dr. Andreas Kohl: That’s right. We produce these catalysts through our subsidiary XiMo, where we’re also investing in a production plant as part of this project. XiMo is based in Budapest, Hungary. We then have to transport the catalyst in containers from Hungary to Bitterfeld. But the quantities are relatively small compared with the volumes we’ll process at our Bitterfeld plant.
Claudius Nießen: Mr. Sauter, I asked earlier about using rapeseed methyl ester as a raw material and whether that competes with its use as a fuel. You’ve touched on why it doesn’t. Could you explain that a little more?
Claus Sauter: We’re in a period of transition. There’s currently strong demand for our biodiesel, our rapeseed methyl ester, and that will continue for many decades. This transition won’t happen as quickly as policymakers have planned. Eventually, we’ll be able to power transportation with electricity, although that will still take a long time. But we want to take the next step here because, as I said earlier, transportation can be decarbonized by switching to electricity. The chemical industry can’t be decarbonized; it can only be defossilized. That creates an inherent need for rapeseed methyl ester in these chemical applications, where it can replace fossil carbon with renewable carbon. We’re getting this development underway early because we know it will take many years. And that actually works in our favor. We don’t need it to take off tomorrow. We can introduce it to the market carefully, explain what it can do, and identify applications. Policymakers may also need to make adjustments in certain areas. But we can take this step by step, finding new uses for our rapeseed methyl ester. That also makes us more independent as a company.
Claudius Nießen: Will Verbio need more rapeseed in the future than it does today?
Claus Sauter: No. Depending on how successfully we introduce these chemicals, we’ll redirect some of the rapeseed methyl ester that currently goes into diesel as biodiesel. We’re already seeing diesel consumption decline, but only by a few percent. Even at two or three percent a year, it would still take around twenty-five years for consumption to fall by half. These are lengthy processes. But we’re taking this step now because it gives us additional markets for products we already make. It’s the next stage of processing, if you like.
Claudius Nießen: Dr. Kohl, let me put it another way. If Verbio wants to produce increasing volumes of bio-based chemicals to meet growing demand, will the availability of raw materials eventually become a limiting factor?
Dr. Andreas Kohl: As I mentioned earlier, we’re fortunate to have access to established raw material streams. RME is already produced in quantities of millions of metric tons, which is unusual for a bio-based raw material. As Claus explained, we can draw on those supplies over the medium and long term. We have our own industrial production to support that expansion. We also discussed how C10 is normally produced in large petrochemical plants, where scaling up isn’t straightforward. It requires substantial investment, and you also need to find uses for all the other products those plants produce. That’s difficult. The same applies to palm oil: production can’t simply keep expanding. There may be room for a little more growth, but that’s about it.
Claudius Nießen: Palm kernel oil.
Dr. Andreas Kohl: Palm kernel oil, a co-product of palm oil production, yes. Its production can’t simply be scaled up. But we can work with existing raw material streams to do precisely that: produce these bio-based products from RME at scale.
Claudius Nießen: So you’re specifically targeting that gap.
Dr. Andreas Kohl: That’s right. Targeting that gap, where we see demand and opportunities to develop new products and applications.
Claus Sauter: That’s precisely the point. We’re just getting started. I can’t answer your question yet. First, we need to see…
Claudius Nießen: Well, that would be a first.
Claus Sauter: … how we can establish ourselves in this market. And if the demand is there, the molecules will be available, too. Other companies around the world are also doing research in this direction. There will be many, many applications. That’s why I always push back when people ask, “What will things look like in ten years?” Nobody knows. So let’s take it one step at a time and see how things develop.
Claudius Nießen: You see a market. It’s that simple.
Claus Sauter: Exactly.
Claudius Nießen: Mr. Sauter, we touched on prices earlier considering the current geopolitical situation, which we’ve also discussed in previous episodes. You said that, under these circumstances, your products are already cheaper. But the conventional wisdom is that bio-based products cost more than the alternatives. Setting the current geopolitical situation aside, how do they actually compare with fossil-based raw materials?
Claus Sauter: At current crude oil prices, most of our products are cheaper. But crude oil doesn’t always stay at eighty or ninety dollars. Sometimes it drops to fifty. That volatility, those price swings, makes things difficult for us. We can’t simply start up the plant whenever there’s another war in Iran or something similar, and then… That’s why I said earlier that consumers need to play their part.
Claudius Nießen: We have to pay a price to remain independent.
Claus Sauter: I think we need to stay committed as a society, so these new solutions are sustainable, in the sense that they last. And yes, they cost more. But how much more? We’re really talking about cents here. If I buy a laundry detergent, for example, the difference on the shelf might be thirty to fifty cents for half a liter. Thirty to fifty cents.
Claudius Nießen: Since you mentioned volatility, couldn’t poor harvests also make the supply of bio-based raw materials, and their prices, more volatile? Or is that market considerably more stable?
Claus Sauter: It’s considerably more stable, although that doesn’t mean there won’t be occasional fluctuations. But these agricultural raw materials are available in sufficient quantities, and the money stays in the country and benefits farmers.
Dr. Andreas Kohl: Which brings us back to producing locally for local markets.
Claus Sauter: That`s right.
Dr. Andreas Kohl: As we discussed earlier. And it creates jobs, too.
Claus Sauter: We need to recognize that the raw materials for the things we use every day must come from somewhere. We can keep extracting natural gas, crude oil, and coal from the ground, or we can turn to agriculture for alternatives. They must come from somewhere—it’s not magic. Either from below ground or from what grows above it. And crops grow every day. We don’t have a food-supply problem. Seventy percent of what’s harvested worldwide ends up in animals’ stomachs, not on our plates. There are enough raw materials. We’re now seeing the value of a local supply, not just for food, but also for the applications we’re discussing here.
Claudius Nießen: Dr. Kohl, why should chemical companies switch to bio-based molecules? If I understand correctly, there’s currently very little incentive and few, if any, regulatory requirements. Is that right?
Dr. Andreas Kohl: That’s right. There are very few regulatory requirements to help create a market. But there is the broader goal of climate neutrality. Many companies have voluntarily set climate targets and committed to becoming climate-neutral by 2035, 2040, or 2050 at the latest. So far, that has been the main driver. Now, strategic considerations are clearly becoming more important, too: reducing dependence on particular supply chains and raw materials. This is especially relevant in consumer-facing industries, where companies can communicate those benefits and use them to market their products. Laundry detergents and cleaning products on store shelves are good examples. These bio-based, renewable raw materials are essential if we’re going to meet our climate targets in the chemical industry. And bio-based raw materials are a solution we have available today. Many other approaches are still at the research stage. We can use bio-based raw materials now to help meet our climate targets, alongside recycling quotas and other requirements.
Claudius Nießen: Mr. Sauter, what do you expect from policymakers? You’ve said several times that they also need to move in this direction. Do they have a central role to play here, or not?
Claus Sauter: Regulatory requirements do play a role, but we need to stop, or I need to stop, always criticizing policymakers. The chemical industry itself didn’t want requirements. They said, “We think this is great. We’ll do it voluntarily and support it through our marketing.” Until now, the raw materials weren’t available. Soon, we’ll be producing them in large volumes. Then we’ll see how we can establish ourselves in the market. I started selling biodiesel in 1995. Eventually, we reached a point where a quota was needed because the oil industry was simply blocking progress. Let’s see how things develop in the chemical industry. We need to stay in dialogue with policymakers, who set the targets. But companies like ours, and the conventional chemical industry, have to turn those targets into reality. That’s where we are now. Personally, I believe some kind of quota will be necessary in the medium term. But let’s wait and see before calling on policymakers again.
Claudius Nießen: Dr. Kohl, that lack of product availability is about to change. As I mentioned at the start, your new plant in Bitterfeld is about to begin operations, with an opening ceremony planned for October 2026. What’s the current status of the plant, and what exactly are your plans for commissioning it?
Dr. Andreas Kohl: Our colleagues are working intensively to commission the plant. That means testing each piece of equipment in turn, and then we’ll start production. By October, we’ll be able to operate the plant on an industrial scale and manufacture products. We’ll demonstrate that the technology works and that we can put it into practice. And, of course, we want to show that to our customers, policymakers, and academic partners. This is a very important milestone for us and for the partners we’re working with. The interest has been remarkable. During construction, we even had customers who came to Leipzig and wanted us to take them to Bitterfeld just for a ten-minute visit. They wanted to see for themselves that the plant was being built, that it was really there. That’s precisely the purpose of the event on October 6. We want to show that the plant is there and that it works, that the world’s first ethenolysis plant using rapeseed methyl ester is actually producing and starting to supply these products. We now have customers from around the world. Europe is certainly our strongest customer base, with particular interest from the German chemical industry. The response has been positive, and interest is strong. But we’re also receiving inquiries from international markets: China, Japan, South America—including Brazil—and North America, including the United States and Canada.
Claudius Nießen: What capacity will the plant have? We’ve talked a lot about scaling up and scalability. How much will it ultimately produce?
Dr. Andreas Kohl: Once the plant reaches full capacity after a ramp-up period, it will produce a total of sixty thousand metric tons per year. But we need to be careful. We can’t put sixty thousand metric tons on the market right from the start. That would overwhelm it. With a refinery model that produces several products, we need to strike the right balance and gradually increase production so the market can absorb the output.
Claudius Nießen: So ramping up isn’t just about testing everything on a smaller scale first. It’s also about preparing the market.
Dr. Andreas Kohl: That’s right. As we mentioned, our products undergo further processing. We need to prepare those value chains with our partners, which can involve another two, three, or four processing steps. To do that, you need the product itself. It then gradually works its way through the value chain to the final market and application.
Claudius Nießen: What requirements need to be met right from the start so customers can use these products?
Dr. Andreas Kohl: Working with customers is our main priority now. They expect a certain level of product quality, and we need to deliver it. That means consistently meeting our specifications. We need to establish ourselves as a reliable supplier and ensure consistent quality.
Claudius Nießen: So once everything is in place, you’ll still be working with customers through what I’d call a testing or experimentation phase for the individual processes.
Dr. Andreas Kohl: Yes, that’s right. Even a so-called drop-in replacement, essentially the same molecule serving the same purpose, still has to go through the customer’s testing and approval process. With something new like 9-DAME, that’s often a little more complicated.
Claus Sauter: And that puts your earlier question about needing more rapeseed oil into perspective. We currently have nearly eight hundred thousand metric tons of biodiesel production capacity. Here, we’re talking about sixty thousand metric tons. That’s less than ten percent. This is just the beginning.
Claudius Nießen: Dr. Kohl, let’s return to your new facility in Bitterfeld. Your new—well, what should we call it? Is it a chemical plant?
Dr. Andreas Kohl: Yes, it’s a chemical plant.
Claudius Nießen: You’ve explained how it works in small, manageable doses for us. But as a chemist, is this a special project for you?
Dr. Andreas Kohl: For me personally, it’s an absolutely unique project. It’s not just about a product. It’s a new catalyst technology being used for the first time in a large industrial plant. The products it yields are incredibly exciting for the chemical industry, including new platform chemicals. And we’re doing all this using modern green chemistry: conserving resources, working without solvents, and operating at low pressures and temperatures. Everything a modern plant needs is there, using a bio-based raw material. Add to that an exciting environment and an enormous range of potential applications for the products. You couldn’t ask for more. Working as a team and having the opportunity to bring this project to market, I really can’t think of anything else like it in Europe.
Claudius Nießen: So it’s a world first.
Dr. Andreas Kohl: It’s a world first and an absolutely unique project. As Claus often says, Verbio is taking on a certain amount of risk by putting this into practice. But I believe that’s exactly what’s needed to move things forward and make these new solutions successful in the market.
Claudius Nießen: Mr. Sauter, is that why you work so well together, because you share that pioneering spirit?
Claus Sauter: It’s not just the two of us. There are many other people involved. Verbio provides the platform that makes it possible. I’m not Verbio—we all are, together. And we on the Management Board are willing to take these risks. Of course, we also need to explain our plans to our shareholders. But if you look at Verbio’s development over the past twenty years, we’ve followed through on the projects we’ve taken on and made them successful. As I said, this is simply the logical next step we need to take.
Claudius Nießen: And ultimately, this is part of your broader strategy to further diversify Verbio, isn’t it?
Claus Sauter: At Verbio, we need innovative solutions that meet the needs of the times. That’s in our DNA. We want to, and have to, remain at the forefront of our industry.
Claudius Nießen: On that note, thank you both for joining us for this podcast episode. Mr. Sauter, Dr. Kohl, thank you very much.
Dr. Andreas Kohl: Thank you, Mr. Nießen.
Claus Sauter: And thank you for having us, Mr. Nießen.
Claudius Nießen: I wish you every success with the upcoming start-up of the Bitterfeld plant. And a big thank you to all our listeners. Join us next time for another episode of #strawclever, available on Apple Podcasts, Deezer, Spotify, and online at strawclever.com. Until then, thanks for listening.

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