OBTAINING HETEROGENEOUS CATALYSTS FOR ACETONITRILE SYNTHESIS

This article discusses the study of the properties of heterogeneous catalysts for the synthesis of acetonitrile. The process of acetylene condensation with ammonia in the presence of catalysts based on cadmium fluoride (KFA-1, KKFA-1, KFA-2, KCA-1) was studied. The condensation of acetylene with ammonia in the presence of cadmium fluoroaluminum catalysts was studied. It was found that the KFA catalyst stabilizes after the first cycle of operation, and the yield of acetonitrile decreases to a minimum and is from 5.0 to 10.0%. The main products of the reaction are mixtures of pyridine bases, among which 2- and 4-methylpyridines predominate. It was found that as the catalyst operates, its activity gradually decreases. The removal of metallic cadmium from the catalyst is observed.