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Evonik and Siemens to generate high-value specialty chemicals from carbon dioxide and eco-electricity

The picture shows a fermenter.

"We are developing a platform that will allow us to produce chemical products in a much more cost-effective and environmentally-friendly way than we do today", explains Dr. Günter Schmid, technical project responsible of Siemens Corporate Technology. "Using our platform, operators will in future be able to scale their plants to suit their needs." The new technology combines multiple benefits. It not only enables chemicals to be produced sustainably, it also serves as an energy store, can respond to power fluctuations and help stabilize the grid. Rheticus is linked to the Kopernikus Initiative for the energy transition in Germany which is seeking new solutions to restructure the energy system. The Rheticus project will receive 2.8 million euros in funding from Germany's Federal Ministry of Education and Research (BMBF).
"With the Rheticus platform, we want to demonstrate that artificial photosynthesis is feasible", adds Dr. Thomas Haas, who is responsible for the project in Evonik's strategic research department Creavis. Artificial photosynthesis is where CO2 and water are converted into chemicals using a combination of chemical and biological steps, in a process similar to how leaves use chlorophyll and enzymes to synthesize glucose.
Siemens and Evonik are each contributing their own core competencies to this research collaboration. Siemens is providing the electrolysis technology, which is used in the first step to convert carbon dioxide and water into hydrogen and carbon monoxide (CO) using electricity. Evonik is contributing the fermentation process, converting gases containing CO into useful products by metabolic processes with the aid of special micro-organisms. In the Rheticus project, these two steps – electrolysis and fermentation – are scaled up from the laboratory and combined in a technical test facility.
"Rheticus brings together the expertise of Evonik and Siemens. This research project shows how we are applying the Power-to-X idea", says Dr. Karl Eugen Hutmacher from the BMBF. Using electricity to generate chemicals is an idea from the Power-to-X concept. As one of the four pillars of the Kopernikus Initiative, the idea is to help convert and store renewable, electrical energy efficiently. At the same time, the Rheticus platform also contributes to the reduction of carbon dioxide levels in the atmosphere, as it uses CO2 as a raw material. Three tons of carbon dioxide would be needed to produce one tonne of butanol, for example.
Evonik and Siemens see great future potential in the Rheticus platform. It will make it simple to scale plants to the desired size – the chemical industry will be able to adapt them flexibly to local conditions. In future, they could be installed anywhere where there is a source of CO2 – power plant waste gas or biogas for instance.
"Its modular nature and flexibility in terms of location, raw material sources and products manufactured make the new platform attractive for the specialty chemicals industry in particular", says Haas. "We are confident that other companies will use the platform and integrate it with their own modules to manufacture their chemical products", adds Schmid.
Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for 170 years. The company is active around the globe, focusing on the areas of electrification, automation and digitalization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is a leading supplier of efficient power generation and power transmission solutions and a pioneer in infrastructure solutions as well as automation, drive and software solutions for industry. The company is also a leading provider of medical imaging equipment – such as computed tomography and magnetic resonance imaging systems – and a leader in laboratory diagnostics as well as clinical IT. In fiscal 2017, which ended on September 30, 2017, Siemens generated revenue of €83.0 billion and net income of €6.2 billion. At the end of September 2017, the company had around 377,000 employees worldwide. Further information is available on the Internet at www.siemens.com.

Evonik is one of the world leaders in specialty chemicals. The focus on more specialty businesses, customer-orientated innovative prowess and a trustful and performance-oriented corporate culture form the heart of Evonik's corporate strategy. They are the lever for profitable growth and a sustained increase in the value of the company. Evonik benefits specifically from its customer proximity and leading market positions. Evonik is active in over 100 countries around the world with more than 36,000 employees. In fiscal 2016, the enterprise generated sales of around €12.7 billion and an operating profit (adjusted EBITDA) of about €2.165 billion.
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Contact

Florian Martini

Siemens AG

Werner-von-Siemens-Straße 1
80333 Munich
Germany

+49 (89) 636-33446

Edda Schulze

Evonik Industries AG

Rellinghauser Straße 1-11
45128 Essen
Germany

+49 171-4663695