FIELD: chemistry.
SUBSTANCE: invention relates to a modified silicon dioxide catalyst carrier, to a catalyst including a modified silicon dioxide carrier, and to a method for the production of ethylene-unsaturated carboxylic acids or composite esters, in particular α,β-unsaturated carboxylic acids or composite esters.
EFFECT: development of catalysts containing modified silicon dioxide carriers and containing catalytic metal, which are extremely effective catalysts for the production of α,β-ethylene-unsaturated carboxylic acids or composite esters by condensation of the corresponding acid or composite ester with a methylene source, such as formaldehyde, providing a set of advantages, such as a high selectivity level and/or reduction in sintering of a catalyst surface.
49 cl, 81 ex, 5 tbl, 9 dwg
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