FIELD: heterogenic catalysis of oxidation-reduction and acid-basic processes; petroleum processing industry, petrochemical industry; analytic chemistry and organic synthesis; medicine, purification of sewage and industrial water and other processes. SUBSTANCE: zeolite catalyst is prepared by treatment of zeolite in substance chamber, said treatment is carried out at 50-100 V within 2-3 h; 0-0.2 % solution of supporting electrolyte being used as aqueous phase. EFFECT: increased catalytic activity of catalyst, decreased expense of water and thus obtained discharge. 2 cl, 1 tbl
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