本项目聚焦负载型贵金属加氢/脱氢催化剂研究领域的共性科学问题——活性相与载体界面的精准构筑，以丙烷脱氢Pt基催化剂理性设计与研发为主线，系统开展相关应用基础研究。针对丙烷脱氢Pt基催化剂活性相高温稳定性差的瓶颈问题，从助剂Sn引入策略入手，利用氧化铝空穴缺陷增强Sn与氧化铝载体之间的相互作用，提高Sn分散度，可控合成与活性相前驱体孔道匹配的含Sn氧化铝载体。根据“笼蔽效应”和“界面限域效应”理论，从活性相前驱体出发，科学设计合成Pt的有机导向剂，控制Pt精准落位于Sn位点。从而充分发挥Pt与Sn的电子交互作用，获得高选择性和稳定性的Pt活性位。提出可控剥离不同活性相的策略，实现活性相的精准构筑，建立含Sn氧化铝载体的界面结构-活性相-碳氢重构行为之间的构效关系，为丙烷脱氢制丙烯催化剂研发关键技术提供理论支持，以期为后续商业催化剂制备提供认识和理论基础，尽快实现丙烷脱氢催化剂的国产化。

Accurate construction of the interface structure between the active phase and the carrier is a consensus scientific problems in the research field of supported noble metal hydrogenation/ dehydrogenation catalysts. This project focuses on the rational design and development of propane dehydrogenation Pt-based catalysts. Aiming at the bottleneck problem of poor high temperature stability of the active phase of propane dehydrogenation Pt based catalyst. The interaction between the additives Sn and alumina carrier was enhanced by using the aluminum oxide hole defect, so as to improve the Sn dispersion. Then, the alumina carrier containing Sn, and the pore channels matching the active phase precursor can be steerable synthesized. According to the theory of "cage effect" and "interfacial limiting effect", starting from the precursor of active phase, the organic guiding agent of Pt was designed and synthesized scientifically, to control the position of Pt at the Sn site. Thus, the electronic interaction between Pt and Sn can be given full, to obtain Pt active sites with high selectivity and stability. This work will put forward the strategies of the controllable dissecting the different active phases, and setting up the structure-activity relationship between the alumina carrier interface structure - activity phase - hydrocarbon reconstruction performance, to provide theory support for the technology research and the development of propane dehydrogenation catalyst. In addition, the knowledge and theoretical basis for the subsequent preparation of the commercial catalysts can be provide to accelerate the localization processing of propane dehydrogenation catalyst as soon as possible.