Copper‐Zinc Oxide Catalysts for Aldehyde Hydrogenation by Direct Reductive Activation of Precursors. Issue 11 (23rd August 2022)

• Record Type: Journal Article
• Authors: Hiller, Max; Köhler, Klaus
• 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: 1720
• Page End: 1726
• Publication Date: 2022-08-23
• Subjects: Aldehyde hydrogenation -- Copper reduction mechanism -- Cu‐Zn oxide catalyst -- In situ XRD -- Oxy/hydroxy carbonates; Chemical engineering -- Patents -- Periodicals; Chemical engineering -- Periodicals; Chemical industry -- Periodicals; Chemistry, Technical -- Periodicals; 660.05
• DOI: 10.1002/cite.202200086
• Languages: English
• ISSNs: 0009-286X

Abstract

Abstract: Bulk copper‐zinc oxide hydrogenation catalysts are generally prepared by calcination of co‐precipitated precursors followed by reduction. This study reports the direct reduction in hydrogen of co‐precipitated oxy/hydroxy‐carbonate precursors omitting calcination. Dried and incompletely calcined precursors are compared with calcined catalysts. The reduction reactions in hydrogen were monitored in situ by XRD and TGA‐MS. Direct activation of precursors led to higher copper dispersions and increased catalytic activity in the hydrogenation of butyraldehyde to butanol as test reaction. Abstract : Bulk copper‐zinc oxide hydrogenation catalysts prepared by direct reductive activation of dried or incompletely calcined co‐precipitated precursors show higher copper dispersions and increased catalytic activity in the hydrogenation of aldehydes compared to classically calcined Cu/Zn metal oxides.