摘要
分子筛催化剂是正构烷烃临氢异构化反应的核心,在改善油品质量方面起到极其重要的作用,在如今的石油化工领域有着不可替代的地位。介绍了微孔-微孔复合分子筛催化剂在正构烷烃异构化反应中的效果,并对其反应机理进行探索。异构化反应机理主要包括碳正离子机理、单分子反应机理、双分子反应机理和孔口-锁匙机理等。对常见的微孔分子筛性质及反应性能进行介绍,尤其是对近年来备受关注的微孔-微孔复合分子筛催化剂合成方法进行分类阐述,并对异构化选择性更高的复合分子筛合成方式进行展望。
Molecular sieve catalyst is the core of the hydrogen isomerization reaction of n-alkanes,working extremely important role in improving the quality of oil products,and has an irreplaceable position in the field of petrochemical industry.In this paper,the effect of microporous-microporous composite molecular sieve catalyst on the isomerization of n-alkanes was introduced,and the reaction mechanism was explored.There are carbocation mechanism,monomolecular reaction mechanism,bimolecular reaction mechanism and mouse-key mechanism.In this paper,the properties and reaction properties of common microporous molecular sieves were introduced,especially the synthesis methods of microporous-microporous composite molecular sieves which have attracted much attention in recent years were classified and described,and the synthesis methods of composite molecular sieves with higher isomerization selectivitywere prospected.
作者
刘佳
宋兆阳
王少军
周明东
李蕾
LIU Jia;SONG Zhao-yang;WANG Shao-jun;ZHOU Ming-dong;LI Lei(Liaoning Petrochemical University,Fushun Liaoning 113001,China;Sinopec(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian Liaoning 116000,China)
出处
《当代化工》
CAS
2023年第9期2229-2236,共8页
Contemporary Chemical Industry
基金
中石化支持项目(项目编号:总合-082002)。
关键词
正构烷烃
异构化
微孔-微孔
分子筛
N-alkanes
Isomerization
Micropore-micropore
Molecular sieve
