The Zn species in the catalysts are responsible for propane and cyclic hydrocarbons dehydrogenation, while the Bronsted acid sites located in the channel of Zn/HZSM-5 oligomerization and cyclization.

• 丙烷在改性分子筛上芳构化过程是金属离子和分子筛酸性中心共同作用的双功能催化过程。