MODIFICATION WITH ALKALI METAL CATIONS AS A METHOD OF INCREASING OF THE EFFECTIVITY OF PALLADIUM CATALYSTS OF ACETYLENE ALCOHOLS HYDROGENATION
This work is devoted to the study of the influence of modification of Pd-containing catalyst based on hypercrosslinked polystyrene, which is intended for the synthesis of 2-methyl-3-butene-2-ol (intermediate for production of fragrant substances and fat-soluble vitamins), with cations of alkali metals (Na+, K+) in order to increase its selectivity and activity. The introduction of alkali metal compounds at optimum concentration, along with the selection of reduction conditions, was shown to allow increasing catalyst activity (almost twice) and selectivity (from 97.5% up to 99.0%). The resulting modified catalyst is a good alternative to industrial Lindlar catalyst, which allows reaching 95% selectivity with respect to target product at 100% substrate conversion.