Cu-Co/ZnAl2O4 Catalysts for CO Conversion to Higher Alcohols Synthesized from Co-Precipitated Hydrotalcite Precursors
Publication date
2022-11
Authors
Mockenhaupt, Benjamin
Özcan, Fatih
Dalebout, Remco
Mangelsen, Sebastian
Machowski, Thomas
De Jongh, Petra
Behrens, Malte
Editors
Advisors
Supervisors
Document Type
Article
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cc_by
Abstract
The role of Cu:Co composition in bi-metallic Cu-Co/ZnAl2O4 catalysts on higher alcohol synthesis (HAS) was investigated at H2:CO = 4. The addition of Cu strongly facilitated Co reduction upon catalyst activation and suppressed coke deposition during HAS. Formation of predominantly hydrocarbons and higher alcohols was observed on the bi-metallic catalysts. Co/ZnAl2O4 produced mainly CH4 and Cu/ZnAl2O4 mainly CH3OH, while at Cu:Co = 0.6 the best ethanol selectivity of 4.5 % was reached. The microstructure of the spent catalysts confirmed a close interaction of Cu and Co.
Keywords
Co-precipitation, Coking, Cu-Co bi-metallic catalysts, Higher alcohol synthesis, Zinc oxide, General Chemistry, General Chemical Engineering, Industrial and Manufacturing Engineering
Citation
Mockenhaupt, B, Özcan, F, Dalebout, R, Mangelsen, S, Machowski, T, de Jongh, P E & Behrens, M 2022, 'Cu-Co/ZnAl 2 O 4 Catalysts for CO Conversion to Higher Alcohols Synthesized from Co-Precipitated Hydrotalcite Precursors', Chemie-Ingenieur-Technik, vol. 94, no. 11, pp. 1784-1797. https://doi.org/10.1002/cite.202200171