ИСТИНА

Olefins are the main feedstock for the wide range of polymer materials and valuable chemicals. However, is a difficult industrial task. The prospective production method of alkenes is catalytic dehydrogenation of light paraffins, for instance propane (propane dehydrogenation – PDH). Commercial dehydrogenation catalysts consist of Pt or CrOx particles supported on different stable oxide materials. Platinum-based systems are quite expensive and short-lived, and high chromium content in catalysts can pose risk to human health due to the possible presence of toxic Cr6+ compounds. Therefore, recent studies focus on the development of new catalytic systems with a reduced content of precious metals and chromium.Samples prepared with “one-pot” method exhibit relatively high selectivity and stability during catalytic experiments; the rate of propene formation increases almost proportionally to the Cr loading in the calcined catalysts. The catalytic properties of their counterparts, synthesized by two-step technique, do not directly proportionally depend on the chromium content, which is probably caused by different dispersion and concentration of active Cr3+ species.