Synthesis of methylpyridines by catalytic method in the gas phase

Abstract

The article presents the results of the yield of pyridine derivatives obtained on the basis of a catalyst of various compositions and, at the same time, the efficiency of new catalytic systems for the synthesis of pyridine derivatives is investigated. “Angren kaolin” (Uzbekistan) was used to develop catalytic systems. The development and implementation of new catalytic systems leads to a decrease in the problems associated with the purchase of catalysts from abroad and will entail economic benefits for the republic. To solve the problems, the following research methods were used: spectral analysis, microscopic analysis, potentiometric method, physicochemical methods of analysis, and methods of preparing catalysts.The catalysts have been developed with different ratios of starting components. The efficiency of heterogeneous catalysts was determined by the synthesis of pyridine derivatives at the facilities of JSC “Navoiyazot”. It was found that among the monocomponent catalysts, the CK-13 brand catalyst ((CdO-13.0%, kaolin-87.0%) (2-methylpyridine-41.2%, 4- methylpyridine-22.4%) was more efficient) with a yield of 63.6%, and among two-component catalysts of the CChK-13 brand (CdO-13.0%, Cr2O3-5.0%, kaolin-82.0%) (2-methylpyridine-45.4%, 4-methylpyridine - 24.8%)) with a yield of 70.2%. And also the influence of peptizers on the yield of finished products was studied.