Propane dehydrogenation (PDH) provides an alternative route to non-petroleum based propylene and eligible catalysts with good overall performance are still being explored. Herein, we report the construction of zeolite stabilized Pt-Zn catalysts Pt-Zn/Si-Beta for PDH. Characterization results from transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) and Fourier transform infrared (FTIR) spectroscopy reveal that highly-dispersed Zn species are stabilized by the silanols from zeolite framework dealumination, which then act as the anchoring sites for Pt species. The close contact between Pt-Zn species and the electronic interaction thereof make Pt-Zn/Si-Beta robust PDH catalysts. Under optimized conditions, a high propylene production rate of 4.11 $\mathrm{m}\mathrm{o}\mathrm{l}{\mathrm{m}\mathrm{o}\mathrm{l}}_{\mathrm{P}\mathrm{t}}^{-1}{\mathrm{s}}^{-1}$, high propylene selectivity of 98% and a sustainable deactivation rate of ∼0.02 h⁻¹ can be simultaneously achieved at 823 K. Coke deposition is not the key reason for the catalytic deactivation, while the loss of Zn species and the resulting aggregation of Pt species under high temperatures are responsible for the irreversible deactivation of Pt-Zn/Si-Beta catalyst in PDH reaction.

丙烷脱氢（PDH）为非石油基丙烯提供了另一种途径，并且仍在探索具有良好整体性能的合格催化剂。在这里，我们报道了用于PDH的沸石稳定的Pt-Zn催化剂Pt-Zn / Si-Beta的构建。透射电子显微镜（TEM），紫外-可见（UV-vis）和傅立叶变换红外（FTIR）光谱的表征结果表明，沸石骨架脱铝的硅烷醇可稳定高度分散的Zn物种，然后充当锚固位点用于Pt物种。Pt-Zn物种之间的紧密接触及其电子相互作用使Pt-Zn / Si-Beta成为坚固的PDH催化剂。在优化条件下，丙烯的高生产率为4.11$\mathrm{米}\mathrm{Ø}\mathrm{升}{\mathrm{米}\mathrm{Ø}\mathrm{升}}_{\mathrm{P}\mathrm{Ť}}^{--\mathrm{1个}}{\mathrm{s}}^{--\mathrm{1个}}$，在823 K时可以同时实现98％的高丙烯选择性和约0.02 h ^-1的可持续失活速率。焦炭沉积不是催化失活的关键原因，而Zn物种的流失和所形成的Pt聚集PDH反应中Pt-Zn / Si-Beta催化剂不可逆失活的原因是高温下的各种杂质。