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Specialty Chemicals

Hexanol and butanol from CO2 and water

by Alex Scott
October 19, 2019 | A version of this story appeared in Volume 97, Issue 41
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A photo of a pilot plant.
Credit: Evonik
Bacteria convert gases into specialty chemicals in this pilot plant.

Evonik Industries and Siemens are building a test facility for a joint technology, called Rheticus, that makes industrial chemicals from carbon monoxide and hydrogen. Siemens’s electrolysis process will convert carbon dioxide and water into carbon monoxide and hydrogen, then Evonik will use microorganisms to convert the two gases into hexanol and butanol via fermentation. The German government has agreed to provide the project with almost $4 million in funding.

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