石油化工高等学校学报2024，Vol.37Issue(4)：49-56,8.DOI:10.12422/j.issn.1006-396X.2024.04.007
Sn引入方式对Al2O3负载Pt基催化剂丙烷脱氢性能的影响
Effect of Sn Introduction on the Dehydrogenation Performance of Propane of Al2O3-Supported Pt-Based Catalysts
摘要
Abstract
Sn additives can effectively improve the propylene selectivity of propane dehydrogenated Pt-based catalysts and inhibit the generation of carbon deposition,but the effect of Sn additives is still unclear.Therefore,in this paper,different PtSn action systems were constructed by co-impregnation method and sol-gel method to modulate the introduction of PtSn,and the effect of Sn introduction methods on the dehydrogenation performance of propane of Pt-based catalysts was systematically explored.XRD and BET were used to characterize the texture properties of the catalyst,H2-TPR,TEM and CO-IR were used to distinguish the Sn structure of the additives,and the propane dehydrogenation reaction evaluation and carbon deposition analysis of the catalysts were carried out.The results show that compared with the PtSn/γ-Al2O3 catalyst prepared by co-impregnation method,the Pt/Sn-γ-Al2O3 catalyst prepared by sol-gel method has a lower specific surface area and higher pore size,which can promote the interaction between PtSn clusters and carriers to achieve high metal dispersion.More active sites give the Pt/Sn-γ-Al2O3 catalyst higher propane conversion and propylene yield,and the larger pore size of the carrier also significantly reduces the carbon deposition of the catalyst.关键词
助剂Sn/引入方式/丙烯/PtSn催化剂Key words
Additive Sn/Introduction methods/Propylene/PtSn catalyst分类
化学化工引用本文复制引用
韩飞飞,焦建豪,田祥臣,杨野,秦玉才,宋丽娟..Sn引入方式对Al2O3负载Pt基催化剂丙烷脱氢性能的影响[J].石油化工高等学校学报,2024,37(4):49-56,8.基金项目
国家自然科学基金项目(91961110,U1908203). （91961110,U1908203）
