石油化工高等学校学报2024，Vol.37Issue(5)：46-55,10.DOI:10.12422/j.issn.1006-396X.2024.05.006
助剂Ga对Pt基催化剂脱氢性能的影响
Effect of Additive Ga on Dehydrogenation Performance of Pt-Based Catalyst
摘要
Abstract
The selectivity and stability of Pt-based catalysts can be improved by adjusting the active phase by adding additives.The active phase of Pt-based catalyst was regulated by changing n(Ga)/n(Pt)with Ga as an additive and characterized by BET,FT-IR,TG,H2-TPR,etc.The n(Ga)/n(Pt)of the active phase was optimized under the reaction temperature of 580℃,volume space velocity of 2 000 h-1 and hydrogen-hydrocarbon ratio(volume ratio of hydrogen to propane)of 1.The results show that the Pt in the Pt7Ga/Al2O3 catalyst has the smallest particle size and the best dispersion.The Pt7Ga/Al2O3 catalyst has the best dehydrogenation performance,and the propylene selectivity of the reaction for 3 h was 90.98%,which was 3.01%higher than that with the PtSn/Al2O3 catalyst.The regulation of Ga can enhance the interaction force between Pt and Al2O3 support,lower the acidity of catalyst and the degree of graphitization of catalyst carbon deposition.关键词
Pt基催化剂/丙烷脱氢/活性相/助剂Ga/石墨化程度Key words
Pt based catalyst/Propane dehydrogenation/Active phase/Additive Ga/Degree of graphitization分类
化学化工引用本文复制引用
赵明明,娄洺源,朴茜琳,迟昊天,张海娟..助剂Ga对Pt基催化剂脱氢性能的影响[J].石油化工高等学校学报,2024,37(5):46-55,10.基金项目
辽宁省联合基金项目(U1908203) （U1908203）
辽宁省教育厅面上项目(JYTMS20231438). （JYTMS20231438）
