COx Fixation to Elementary Building Blocks: Anaerobic Syngas Fermentation vs. Chemical Catalysis. Issue 11 (1st October 2022)

• Record Type: Journal Article
• Authors: Perret, Lukas; Lacerda de Oliveira Campos, Bruno; Herrera Delgado, Karla; Zevaco, Thomas A.; Neumann, Anke; Sauer, Jörg
• Other Names: Beller Matthias guestEditor.; Bender Michael guestEditor.; Bornscheuer Uwe T. guestEditor.; Schunk Stephan guestEditor.
• Is Part Of: Chemie Ingenieur Technik. Volume 94:Issue 11(2022)
• Page Start: 1667
• Page End: 1687
• Publication Date: 2022-10-01
• Subjects: Acetogenic C1 conversion -- Biofuels -- Carbon utilization -- Heterogeneous catalysis -- Reaction networks; Chemical engineering -- Patents -- Periodicals; Chemical engineering -- Periodicals; Chemical industry -- Periodicals; Chemistry, Technical -- Periodicals; 660.05
• DOI: 10.1002/cite.202200153
• Languages: English
• ISSNs: 0009-286X

Abstract

Abstract: Heterogeneous catalysis and anaerobic syngas fermentation represent two different approaches for the conversion of synthesis gas into chemicals and fuels. This review provides a unique comparison of different reaction paths for the fixation of CO2, CO and H2 into elementary building blocks such as methanol, acetic acid and ethanol. Operating conditions, reactor engineering, influence of gas impurities, yields, conversion efficiencies as well as downstream product recovery are compared. It was found that mass‐specific productivity ranges in the same order of magnitude for both technologies, while space‐time yield of heterogeneous catalysis is up to three orders of magnitude higher. Abstract : Direct usage and conversion of COx to fuels and chemicals is an important part of a carbon‐neutral circular economy. This review considers syngas fermentation and heterogeneous catalysis as two different approaches of COx fixation. Reaction paths as well as process parameters are compared, and technology‐specific advantages and disadvantages are highlighted.