摘要
综述了近年来国内外铂系低碳烷烃脱氢催化剂的技术现状与研究进展。首先从热力学角度论述了低碳烷烃脱氢反应与相关副反应的反应机理,随后分别从活性位点性能与催化脱氢的关系,氧化铝、分子筛等载体的作用,以及锡、碱金属、碱土金属、过渡金属等助剂改性对催化剂的影响等3个方面分析了铂系低碳烷烃脱氢催化剂的优势与存在的问题,进而探究了铂系脱氢催化剂的失活原因。最后对铂系脱氢催化剂的研究前景做了展望,提出该系列催化剂的主要发展方向包括降低贵金属铂的负载量、提高催化剂的稳定性、减少积炭副反应等。
Technical status and research progress of platinum based catalysts for dehydrogenation of low-carbon alkanes at home and abroad in recent years were reviewed.Firstly,the reaction mechanism of dehydrogenation of low-carbon alkanes and related side reactions was discussed from the perspective of thermodynamics.Then,Advantages and problems of platinum based catalysts for dehydrogenation of low-carbon alkanes were analyzed from three aspects:the relationship between the performance of active sites and catalytic dehydrogenation,the effect of supports such as alumina and molecular sieve,and the influence of additives such as tin,alkali metal,alkaline earth metal and transition metal on the catalyst.The deactivation reason of platinum based dehydrogenation catalyst was further investigated.Finally,the research prospects of platinum based dehydrogenation catalysts were prospected,and the main development directions of these catalysts were proposed,including reducing the loadingamount of precious metal platinum,improving the stability of catalysts and reducing the by-reaction of carbon deposition,etc.
作者
李晓云
胡远明
蔡奇
孙彦民
于海斌
Li Xiaoyun;Hu Yuanming;Cai Qi;Sun Yanmin;Yu Haibin(CenerTech Tianjin Chemical Research and Design Institute Co.,Ltd.,Tianjin 300131,China;Butyl Octanol Workshop of PetroChina Jilin Petrochemical Company)
出处
《无机盐工业》
CAS
CSCD
北大核心
2021年第5期1-6,共6页
Inorganic Chemicals Industry
关键词
铂系催化剂
低碳烷烃
丙烷
丙烯
脱氢
Pt-based catalysts
low-carbon alkanes
propane
propene
dehydrogenation
