CATALYST FOR PRODUCING ETHANOL BY HYDROGENATING ACETIC ACID, CONTAINING PLATINUM-TIN ON SILICA SUPPORT

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to a method of producing ethanol by reducing acetic acid, which includes passing a gaseous stream containing hydrogen and acetic acid in vapour phase with molar ratio of oxygen to acetic acid of at least 4:1, at temperature of about 225°C to 300°C over a hydrogenation catalyst containing platinum and tin, dispersed on a modified substrate. Said modified substrate includes substrate material and an effective amount of a substrate modifier selected from a group consisting of metasilicates of alkali-earth metals, precursors thereof and mixtures thereof.;EFFECT: invention enables to carry out the method with high selectivity, high activity and longer service life of the catalyst.;12 cl, 12 dwg, 5 tbl, 16 ex