MODIFIED CARRIER MATERIALS FOR CATALYSTS Russian patent published in 2011 - IPC C07C67/55 B01J23/52 B01J23/66 B01J23/68 B01J29/89 B01J37/02 B01J37/16 C07C69/15 C07C69/01 B01J23/48 B01J23/54 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing vinyl acetate, involving bringing starting material containing ethylene, acetic acid and an oxygen-containing gas into contact with a palladium- or gold-containing catalyst obtained on a calcined and modified carrier material to form vinyl acetate and at least one by-product, where the carrier material is modified with 1) niobium, magnesium, tantalum, yttrium, lanthanum, praseodymium or combinations thereof; or 2) titanium, zirconium or combinations thereof, where the carrier material is selected from zirconium dioxide, titanosilicate or zirconosilicate, and where the modified carrier material is calcined before adding catalyst components. The invention also relates to a method of producing a catalyst which is suitable for producing vinyl acetate, as well as a catalytic composition for catalysis of production of alkenylalkanoates, including carrier material with at least one modifier, palladium and gold, which react to form a catalyst, where the modified carrier material undergoes calcinations in a non-reducing atmosphere, and the modifier includes 1) niobium, magnesium, tantalum, yttrium, lanthanum, praseodymium or combinations thereof; or 2) titanium, zirconium or combination thereof, where the carrier material is selected from zirconium dioxide, titanosilicate or zirconosilicate.

EFFECT: obtaining catalysts which can be used to produce alkenylalkanoates in general and vinyl acetate in particular, and which are suitable for use in obtaining low ratio of EA/VA while maintaining or improving selectivity of producing CO₂.

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