Catalysts for low-temperature methanol synthesis. Preparation of Cu-Zn-Al mixed oxides via hydrotalcite-like precursors
- Assoreni Co., Milan, Italy
Cu-Zn-Al-mixed oxides are well known as catalysts for methanol synthesis at low temperature. An in-depth investigation into the nature and characteristics of a ternary compound (Mg/sub 6/Al/sub 2/(OH)/sub 16/CO/sub 3/ x 4H/sub 2/O) and its evolution with the calcination temperature until the formation of the oxide phases was carried out. X-ray patterns of the pure hydrotalcite-like phase calcinated at different temperatures (90/sup 0/-45/sup 0/C) and also ESR spectra at this range were reported. After calcination at 350/sup 0/C for 24 hours, the total decomposition of the precursors, with the formation of CuO and ZnO was revealed by X-ray diffraction. There was no evidence of the presence of free Al/sub 2/O/sub 3/. 4 figures, 2 tables.
- OSTI ID:
- 5283071
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 85:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
10 SYNTHETIC FUELS
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM HYDROXIDES
CALCINATION
CARBON COMPOUNDS
CARBONATES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DECOMPOSITION
DELAYED PROTON PRECURSORS
DIFFRACTION
ELECTRON SPIN RESONANCE
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
ISOTOPES
LOW TEMPERATURE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MAGNETIC RESONANCE
MEDIUM TEMPERATURE
METHANOL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
RADIOISOTOPES
RESONANCE
SCATTERING
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZINC COMPOUNDS
ZINC OXIDES