Novel Coated Pt@SnO2/Al2O3 Catalyst for Propane Dehydrogenation

摘要:

采用了连续还原超声波震荡负载的方法制备了新型包裹负载型Pt@SnO2/Al2O3催化剂，特殊的包裹结构使其具有较好的抗聚集和耐烧结性能并利用了透射电镜对其结构进行了表征。相比传统浸渍负载型的催化剂来讲，当铂锡的摩尔比为1:1.5时制备的Pt@SnO2/Al2O3催化剂展现出优异的丙烷催化脱氢性能和高温稳定性，这也进一步证实了SnO2壳和Pt核之间强烈的相互作用。

Abstract:

Novel coated Pt@SnO2/Al2O3 supported catalyst was prepared by a continuous reduction-ultrasonic loading approach. The peculiar coated structure enables it to have better aggregation and sintering resistance and was characterized by transmission electron microscope. When used in the propane dehydrogenation reaction, coated Pt@SnO2/Al2O3 with a Pt/Sn molar ratio of 1:1.5 exhibited excellent catalytic activity and high-temperature stability compared with that using the conventional impregnation method, which further verified intense synergistic interactions between SnO2 shell and Pt core.