Methanol synthesis over a Cu/ThO/sub 2/ catalyst
Journal Article
·
· J. Catal.; (United States)
OSTI ID:6186993
A Cu/ThO/sub 2/ catalyst prepared from the binary alloy ThCu/sub 6/ was found active for the synthesis of methanol from carbon monoxide and hydrogen. X-Ray diffraction revealed the presence of a Cu/sup +/ species, suggested as the active species for methanol synthesis. The effects of P/sub CO/, P/sub H2/ and temperature on the kinetics of methanol synthesis, suggest a Langmuir-Hinselwood mechanism for dual site adsorption in which CO is strongly adsorbed and H/sub 2/ weakly adsorbed. Studies of the effect of H/sub 2//CO ratio revealed that the use of low hydrogen content synthesis gas, i.e., H/sub 2//CO = 0.8/1.0, results in rapid catalyst deactivation. X-Ray diffraction and thermal gravimetric studies attributed catalyst deactivation to carbon formation, a probable consequence of the Boudouard reaction. Differential scanning calorimetry studies suggested that the carbon exists as both atomic carbon, readily reactive with hydrogen to yield methane, and amorphous or polymeric carbon, less reactive and the primary agent of catalyst deactivation. 12 references, 8 figures, 2 tables.
- Research Organization:
- Air Products and Chemicals, Inc., Allentown, PA
- OSTI ID:
- 6186993
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 89:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
090221* -- Alcohol Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ACTINIDE COMPOUNDS
ALCOHOL FUELS
ALCOHOLS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
COPPER COMPOUNDS
DATA
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
FUELS
GRAVIMETRIC ANALYSIS
HYDROGEN
HYDROXY COMPOUNDS
INFORMATION
KINETICS
METHANOL
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
SYNTHETIC FUELS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THORIUM COMPOUNDS
THORIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
10 SYNTHETIC FUELS
ACTINIDE COMPOUNDS
ALCOHOL FUELS
ALCOHOLS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
COPPER COMPOUNDS
DATA
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
FUELS
GRAVIMETRIC ANALYSIS
HYDROGEN
HYDROXY COMPOUNDS
INFORMATION
KINETICS
METHANOL
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
SYNTHETIC FUELS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THORIUM COMPOUNDS
THORIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION