The stabilization effect of Al_(2)O_(3)on unconventional Pb/SiO_(2)catalyst for propane dehydrogenation  

作　　者：Guowei Wang Lanhui Zhou Huanling Zhang Chunlei Zhu Xiaolin Zhu Honghong Shan 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Qingdao 266580,China [2]SINOPEC(Dalian)Research Institute of Petroleum and Petrochemical Co.,Ltd.,Dalian 116000,China

出　　处：《Frontiers of Chemical Science and Engineering》2023年第10期1423-1429,共7页化学科学与工程前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.22178390);the Natural Science Foundation of Shandong Province of China(Grant No.ZR2022MB023);the Focus on Research and Development Plan in Shandong Province(Grant No.2021ZLGX06)。

摘　　要：Similar to Sn,Pb located at the same group(IVA)in the periodic table of elements,can also catalyze propane dehydrogenation to propene,while a fast deactivation can be observed.To enhance the stability,the traditional carrier Al_(2)O_(3)with a small amount,was introduced into Pb/SiO_(2)catalyst in this study.It has been proved that Al_(2)O_(3)can inhibit the reduction of PbO,and weaken the agglomeration and loss of Pb species due to its enhanced interaction with Pb species.As a result,3Al15Pb/SiO_(2)catalyst exhibits a much higher stability up to more than 150 h.In addition,a simple schematic diagram of the change of surface species on the catalyst surface after Al_(2)O_(3)addition was also proposed.

关 键 词：Pb/SiO_(2) Al_(2)O_(3) propane dehydrogenation PROPENE stability 

分 类 号：O64[理学—物理化学]