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Higher alcohol synthesis over Na-modified Co-Cu catalysts: Co2C formation and effect of surface composition

  • Cu–Co-based model catalysts were prepared by a sophisticated alkali-free synthesis method and tested in the conversion of synthesis gas to higher alcohols. MoO3-coated alumina was used as the support, providing both high specific surface area and strongly interacting sites for the deposition of the active metals. A bulk Cu/Co ratio of ~2 was found to be most suitable in terms of activity and product distribution. Surface enrichment of Mo for all samples was observed by XPS, which significantly influenced the performance of the catalysts. Mo was found to be both a structural and a chemical promoter. Strong metal–support interactions were further achieved by modification of alumina with magnesia. With 12 wt% Mg incorporated, the catalysts showed 40% total oxygenate selectivity including 11% selectivity to ethanol.

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Metadaten
Author:Johan Anton, Janine Nebel, Christian Froese, Ralph Kleinschmidt, Thomas Quandt, Holger Ruland, Stefan KaluzaORCiD, Martin Muhler
Fachbereich/Einrichtung:Hochschule Düsseldorf / Fachbereich - Maschinenbau und Verfahrenstechnik
Document Type:Part of a Book
Year of Completion:2015
Language of Publication:English
Publisher:DGMK
Place of publication:Hamburg
Creating Corporation:DGMK
Parent Title (English):Preprints of the DGMK-Conference "Synthesis Gas Chemistry", October 7 - 9, 2015, Dresden
Editor:Stefan Ernst
Volume:DGMK Tagungsbericht, 2015,2
Page Number:137
ISBN:978-3-941721-56-2
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Licence (German):keine Lizenz - nur Metadaten
Release Date:2021/10/18
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