Study of the CuO-ZnO catalytic system
The phase composition, morphology, and other structural characteristics of a copper-zinc system prepared by the non-traditional method of mixing copper and zinc hydroxycarbonates in water-ammonia medium at 75/sup 0/C in stages of mixing, thermal decomposition, and activation in an atmosphere of hydrogen, and the catalytic properties in the reaction of low-temperature conversion of carbon monoxide with water vapor were studied. A chemical reaction with formation of a mixed copper and zinc hydroxycarbonate takes place during mixing of the starting components. It was found that samples prepared by thermal decomposition and reduction of a compound with a structure and composition close to aurichalcite (Zn, Cu)/sub 5/(CO/sub 3/)/sub 2/(OH)/sub 6/, exhibit the highest activity. The x-ray amorphous state of a significant fraction of the copper in the reduced samples correlates with their catalytic activity.
- Research Organization:
- Institute of the Nitrogen Industry and Products of Organic Synthesis, Moscow (USSR)
- OSTI ID:
- 6083845
- Journal Information:
- Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 28:6; ISSN KICAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ANNEALING
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
FLUIDS
GASES
HEAT TREATMENTS
HETEROGENEOUS CATALYSIS
LATTICE PARAMETERS
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
VAPORS
WATER VAPOR
X-RAY DIFFRACTION
ZINC COMPOUNDS
ZINC OXIDES