Methanol and C sub 2 oxygenate synthesis over cesium doped Cu/ZnO and Cu/ZnO/Al sub 2 O sub 3 catalysts: A study of selectivity and sup 13 C incorporation patterns

Journal Article · Sat Oct 01 00:00:00 EDT 1988 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(88)90268-0· OSTI ID:6580127

Nunan, J G; Bogdan, C E; Klier, K; Smith, K J; Young, Chyiwoei; Herman, R G ^[1]

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1. Lehigh Univ., Bethlehem, PA (USA)

Cesium formate significantly promotes methanol and C{sub 2} oxygenate (methyl formate MF and ethanol EtOH) synthesis over the Cu/ZnO catalyst. {sup 13}C NMR analysis of the product obtained from {sup 13}CH{sub 3}OH and {sup 12}CO/H{sub 2} shows that MF is formed by direct carbonylation of methanol and EtOH is formed by coupling of oxygenated C{sub 1} intermediates originating from methanol. The C{sub 1} coupling mechanism overrides various CO insertion paths to ethanol over the present Cs/Cu/ZnO catalyst. The kinetic significance of C{sub 1} aldehydic species such as adsorbed formyl and formaldehyde is supported by experimental evidence and theoretical calculations. 71 refs.

• OSTI ID: 6580127
• Journal Information: Journal of Catalysis; (USA), Journal Name: Journal of Catalysis; (USA) Vol. 113:2; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

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