Catalytic behavior and surface chemistry of copper/ZnO/Al sub 2 O sub 3 catalysts for the decomposition of 2-propanol
Journal Article
·
· Journal of Catalysis; (United States)
- Univ. di Roma (Italy)
CuO/ZnO/Al{sub 2}O{sub 3} samples (1 and 4 Cu atoms and 1, 5, 15, and 30 Zn atoms per 100 Al atoms, respectively) have been tested as catalysts for the decomposition of 2-propanol. The samples were pretreated in a controlled way in hydrogen or in the reaction medium in order to have a known surface content of Cu(0). Below 440 K the samples showed only dehydrogenating activity. A linear relationship was found between the rate constant and the surface area of zero-valent copper. It is hence proposed that surface Cu(0) species are responsible for the dehydrogenation. The higher values of turnover frequency for the present system in comparison with the values previously found on CuO/Al{sub 2}O{sub 3} enable a proposal to be made for the role of the zinc in the activity of the Cu(0) species. The beneficial effect of the zinc on the reducibility of Cu{sup 2+} ions and a reduction mechanism are also discussed.
- OSTI ID:
- 7141748
- 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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Related Subjects
10 SYNTHETIC FUELS
100200 -- Synthetic Fuels-- Production-- (1990-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COPPER
DECOMPOSITION
DEHYDROGENATION
ELEMENTS
HYDROXY COMPOUNDS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROPANOLS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENTS
ZINC COMPOUNDS
ZINC OXIDES
100200 -- Synthetic Fuels-- Production-- (1990-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COPPER
DECOMPOSITION
DEHYDROGENATION
ELEMENTS
HYDROXY COMPOUNDS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PROPANOLS
SURFACE AREA
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENTS
ZINC COMPOUNDS
ZINC OXIDES