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.
Author: | Johan Anton, Janine Nebel, Christian Froese, Ralph Kleinschmidt, Thomas Quandt, Holger Ruland, Stefan KaluzaORCiD, Martin Muhler |
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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 |