PROCEDE DE PREPARATION D'UNE COMPOSITION CATALYTIQUE A BASE D'OXYDES DE CUIVRE, ZINC ET ALUMINIUM, SON UTILISATION POUR DES REACTIONS DIVERSES, ET PROCEDE DE SYNTHESE DU METHANOL A PARTIR D'OXYDES DE CARBONE ET D'HYDROGENE AVEC CETTE COMPOSITION COMME CATALYSEUR

A process for preparing a catalyst composition comprising copper oxide, zinc oxide and aluminum oxide as essential ingredients and optionally containing boron oxide, which comprises (a) a step of precipitating from an aqueous solution of a water-soluble copper salt optionally containing a water-solu...

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1. Verfasser: TADASI NAKAMURA, MINORU OSUGI, YORIKO OBATA ET SHUJI EBATA
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description A process for preparing a catalyst composition comprising copper oxide, zinc oxide and aluminum oxide as essential ingredients and optionally containing boron oxide, which comprises (a) a step of precipitating from an aqueous solution of a water-soluble copper salt optionally containing a water-soluble boron compound the copper component, together with the boron component if it is present, using an alkaline substance selected from alkali carbonates and alkali bicarbonates as a precipitant; (b) a step of blowing carbon dioxide gas into an aqueous dispersion of a zinc compound selected from zinc oxide and zinc hydroxide optionally containing a water-soluble boron compound to convert the zinc compound to basic zinc carbonate and simultaneously precipitate the boron component if it is present; and (c) a step of calcining a mixture of the solid products obtained in steps (a) and (b) in the presence of an alumina precursor compound. The resulting catalyst is useful for synthesizing methanol from a gaseous mixture of carbon monoxide and/or carbon dioxide and hydrogen.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
title PROCEDE DE PREPARATION D'UNE COMPOSITION CATALYTIQUE A BASE D'OXYDES DE CUIVRE, ZINC ET ALUMINIUM, SON UTILISATION POUR DES REACTIONS DIVERSES, ET PROCEDE DE SYNTHESE DU METHANOL A PARTIR D'OXYDES DE CARBONE ET D'HYDROGENE AVEC CETTE COMPOSITION COMME CATALYSEUR
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