NEWS COMMENTARY

Evonik and Siemens progress to pilot scale with CO₂-to-butanol/hexanol project

Published:
October 05, 2020
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Originally launched in 2018, the two companies' Rheticus project successfully validated the combination of CO2 electrolysis and fermentation at the lab scale, and they launched a pilot system for the next phase of the project. Given the high cost of CO2 electrolysis, targeting high-value specialty chemicals made from butanol or hexanol intermediates is preferable over C1 alcohols – however, the technology platform is still far from economic viability unless a very cheap source of electricity is obtained. 

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