DEACTIVATION OF A ZINC ACETATE CATALYST FOR THE SYNTHESIS OF VINYL-ACETATE FROM ACETYLENE AND ACETIC-ACID

The influence was studied of the reaction conditions of carrying out the synthesis of vinyl acetate from acetylene and acetic acid and of preliminary treatment with gas mixtures on the catalytic and physicochemical properties of the zinc acetate catalyst on active carbon. An interrelationship was found between the degree of deactivation of the catalyst and the magnitude of the carrier surface change during the formation of condensation products. It was shown that the processes leading to the deactivation of the catalyst in carrying out the reaction both under laboratory conditions and in an industrial reactor are identical.