Chinanews (chinanews) chinanews (chinanews) chinanews (chinanews) Tianjin, January 3(Sun Lingling, Jiao Defang) a few days ago, Tianjin University made new progress in the study of the catalytic reaction mechanism of propane dehydrogenation to propylene, by adding the right amount of hydrogen to the feedstock, a more active hydride site can be formed on the surface of the oxide catalyst to increase the efficiency of propylene production, the related results were published in the international authoritative journal Nature Chemistry on January 2. Propylene is an important foundational chemical, used to make the “Big three” synthetic materials of plastics, synthetic rubber and synthetic fibres, its downstream products are widely used in paint, medicine, electrical appliances, automotive and other fields, in the national economy occupies an important position.

It is understood that the production of olefin technology is an important indicator of a country's petrochemical industry science and technology level. Propane dehydrogenation is the second largest propylene production process in our country, and it is also a new propylene production technology with the fastest growing market share and the most prospect. Catalysts play an important role in this technology. The Tianjin University New Energy Chemical team has proposed a new mechanism for “Hydride-mediated dehydrogenation of propane”: Metal oxide surfaces form hydride active sites during the reaction. The new sites are involved in the catalytic cycle of propane dehydrogenation, and the intrinsic activity of the catalyst is greatly increased while coke production is inhibited, thus speeding up the reaction process. Based on this, the team developed an environmentally friendly supported gallium oxide-based catalyst and a hydrodehydrogenation process that significantly improved propane dehydrogenation performance, the propane conversion, propylene selectivity, reaction and regeneration stability of the product are better than those of similar products in the world. According to the briefing, in recent years, the Tianjin University New Energy Chemical Industry team has explored the development of a “Rational design-precision construction-application-led” catalyst research paradigm, it has overcome some scientific and technical problems in propylene production, and established a relatively complete new type of high-efficiency propane dehydrogenation catalyst and process patent system with independent intellectual property rights, in the future, it is expected to be popularized and applied nationwide. Editor: Liu Yanghe