CATALYST, METHOD OF ITS PREPARATION AND METHOD OF PRODUCING METHYL ACETATE

摘要

FIELD: chemistry. ^ SUBSTANCE: method relates to production of acetic acid ether (methyl acetate) via carbonylation of dimethyl ether in gas phase in presence of catalyst and may be used in chemical industry. Invention covers catalyst for carbonylation of dimethyl ether that comprises acid cesium salt of phosphor-tungsten heteropoly acid CsxHyPW12O40, where 1.3ëñxëñ2.2, y=3-x with platinum additive in amount of 0.25-1.0 wt %. Catalyst in prepared on adding cesium soluble salt to mix of solutions of phosphor-tungsten heteropoly acid and platinum-hydrochloric acid, both taken in required ratio, evaporating, drying, tabletting and grinding to required size. Invention covers also production of methyl acetate in presence of above described catalyst. ^ EFFECT: higher catalytic activity. ^ 5 cl, 9 ex, 1 tbl