Methanol synthesis from H sub 2 , CO, and CO sub 2 over Cu/ZnO catalysts

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90106-R· OSTI ID:7256045

Chanchlani, K G; Hudgins, R R; Silveston, P L ^[1]

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1. Univ. of Waterloo, Ontario (Canada)

Methanol synthesis kinetics at steady state are reported for two catalysts: Cu/ZnO (as Cu:Zn = 30:70 atomic ratio) and Cu/ZnO/Al{sub 2}O{sub 3} (Cu:Zn:Al = 60:30:10 atomic ratio) for various syngas compositions and temperatures from 200 to 275 C. In addition, catalyst deactivation is discussed along with XPS-Auger measurements of surface composition for fresh and used catalysts. Apparent activation energies for methanol synthesis on the Cu/ZnO catalyst depend on both temperature and fractional CO{sub 2} in the CO-CO{sub 2} mixture and reflect a change in the importance of the CO and CO{sub 2} as sources of methanol in the synthesis. The water-gas shift reaction does not proceed to equilibrium for CO mole fractions below 0.05. Experimental results confirm earlier observations that methanol is formed directly from CO and CO{sub 2}. However, in syngas mixtures, methanol production from CO and CO{sub 2} is not just additive; some interconversion must be involved.

• OSTI ID: 7256045
• Journal Information: Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 136:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

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ACTIVATION ENERGY
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AUGER ELECTRON SPECTROSCOPY
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
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ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY
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FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGENATION
HYDROXY COMPOUNDS
INTERMEDIATE BTU GAS
METALS
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METHANOL
ORGANIC COMPOUNDS
OXIDES
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PHOTOELECTRON SPECTROSCOPY
QUANTITY RATIO
SHIFT PROCESSES
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TEMPERATURE DEPENDENCE
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WATER GAS
X-RAY SPECTROSCOPY
ZINC COMPOUNDS
ZINC OXIDES