COBALT-ZEOLITE CATALYSTS FOR THE SYNTHESIS OF HYDROCARBONS FROM CO AND H-2

Catalysts prepared by mechanical mixing of high-silica zeolite ZSM-5 w ith cobalt oxide Co3O4, basic cobaltous carbonate, and cobaltous carbo nate were studied. The nature of the cobalt compound introduced into t he mixture affects the catalytic and physicochemical properties of the catalyst. The presence of Co3O4 in the sample (introduced as oxide or obtained by thermal decomposition of the carbonate) is favorable to t he formation of aromatic compounds from CO and H-2. The use of cobalto us carbonates for the preparation of catalysts results in development of the porous structure of the catalyst. During preparation of samples , the mechanical treatment partially destroys the zeolite framework of the support.