FIELD: catalytic chemistry, chemical technology. SUBSTANCE: method involves treatment of a carrier - the activated porous carbon material - with gaseous hydrocarbons at 700-1200 C up to 3-50% content of pyrolytic carbon in it. Then the highly dispersed palladium is deposited on carrier, washed off and dried. The parent components were taken at amount providing 0.1-10% palladium content on carrier in catalyst. Carrier has 3-50% pyrolytic carbon and 50-97% activated porous carbon material. This catalyst decreases p-carboxybenzaldehyde content in terephthalic acid in the process of its hydrorefining. EFFECT: enhanced activity of catalyst. 2 cl, 1 tbl
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Authors
Dates
1997-02-10—Published
1989-11-13—Filed