The effect of chlorine elimination from Pt-Sn catalyst on the behavior of hydrocarbon reconstruction in propane dehydrogenation was investigated. The results showed that the chlorine elimination significantly affects multiple characteristics of the catalysts, the type of Pt active phases, and the behavior of hydrocarbon reconstruction. There was no apparent change in catalyst structure. In contrast, the acidity of the catalyst, its specific surface area, and pore volume remarkably decreased whereas its mean pore diameter increased under the same conditions. The degree of Pt sintering, which is disadvantageous to the reaction, was also aggravated. The chlorine elimination also influenced the behavior of hydrocarbon reconstruction in propane dehydrogenation and demonstrated a crucial function in determining selectivity as evidenced by coking experiments. In this work, a strong correlation was established to demonstrate the relation between the structure of Pt active phase and the behavior of hydrocarbon reconstruction in propane dehydrogenation. It is an optimum progress that the chlorine elimination conditions of the Pt active phases centered on the Pt(100) surfaces and the PtSnK/Al₂O₃ exhibited the best catalytic performance and a low coking rate. Finally, a new model was established to describe the influence of chlorine elimination on the interactions between Pt and SnOx.

研究了从Pt-Sn催化剂中除氯对丙烷脱氢中烃重构行为的影响。结果表明，消除氯气会显着影响催化剂的多种特性，Pt活性相的类型以及碳氢化合物的重构行为。催化剂结构没有明显变化。相反，在相同条件下，催化剂的酸度，比表面积和孔体积显着降低，而平均孔径却增加。对反应不利的Pt烧结程度也被加重了。氯的消除还影响丙烷脱氢中烃重构的行为，并显示出在决定选择性方面的关键功能，焦化实验证明了这一点。在这项工作中，建立了强大的相关性，以证明Pt活性相的结构与丙烷脱氢中烃的重构行为之间的关系。以Pt（100）表面和PtSnK / Al为中心的Pt活性相的除氯条件是一个最佳的进展₂ O ₃表现出最佳的催化性能和较低的焦化率。最后，建立了一个新的模型来描述除氯对Pt和SnOx之间相互作用的影响。