KATALIS BERBAHAN DASAR PALADIUM, ALKALI DAN LANTANIDA DAN METODE UNTUK PEMBUATAN VINIL ASETAT

摘要

The present invention relates to a catalytic converter, the 0,6 - 3,5 w -% palladium and / or its compounds, 0,1 - 2,5 w -% cadmium and / or its compounds, 0,3 - 10 w -% alkali metal compounds and additionally 0,01 - 1 w -% at least a lanthanoid metal and / or compounds thereof on a shaped support, the percentages based on the metal contents, based on the total weight of the catalyst, obtainable by polymerizing dollars a (1) the shaped support with soluble palladium -, cadmium, alkali metal salts and at least a lanthanoid salt separately or at the same time a - or impregnated several times; dollars a (2) the support is dried after each impregnation step; and dollars a (3), if appropriate, the catalyst precursor by means of a treatment with a reducing agent is reduced, dollars a as well as its use for the preparation of vinyl acetate of acetic acid, ethylene and oxygen or oxygen-containing gases.