丙烷脱氢制丙烯催化剂研究的进展

丙烯是化工行业重要的基础原料,受丙烯下游产品的拉动,国内外对丙烯的需求量逐年递增。丙烯主要来源于石油的催化裂解,但石油资源的日益匮乏无法满足全球对丙烯的需求,因此研究丙烷脱氢制丙烯工艺具有重大的实际意义。笔者综述了丙烷通过直接脱氢、氧气或二氧化碳氧化脱氢等方法制丙烯的反应热力学、反应机理及常用催化剂体系,论述了各种催化剂的作用机制、催化剂表面的活性物种和性质,评价了它们的丙烷脱氢反应性能,并展望了丙烷脱氢制丙烯的发展方向。

Advance in Catalysts for Propane Dehydrogenation to Propylene

Propylene is an important chemical in petrochemical industry, and the demand for propylene is continuously increasing. The technologies for dehydrogenation of propane to propylene have received much attention because the conventional petroleum cracking can’t satisfy the growing demand for propylene. Several kinds of the reaction including direct dehydrogenation and oxidative dehydrogenation in the presence of O2 or CO2, as well as thermodynamics and mechanism and the corresponding catalysts are reviewed here. Meanwhile, the merits and drawbacks of each catalytic system are discussed, and the further development for the propane dehydrogenation is also presented.