长链烷烃异构化分子筛改性研究进展  

Research Progress in Long-chain Alkane Isomerization Zeolites Modification

作　　者：李思洁 宋兆阳 徐会青 刘全杰 LI Sijie;SONG Zhaoyang;XV Huiqing;LIU Quanjie(Sinopec(Dalian)Research Institute of Petroleum and Petrochemicals Co.,Ltd.,Dalian Liaoning 116045,China)

机构地区：[1]中石化(大连)石油化工研究院有限公司,辽宁大连116045

出　　处：《当代化工》2024年第4期946-952,973,共8页Contemporary Chemical Industry

基　　金：中国石化重点科技项目,TBA高效加氢精制催化剂开发(项目编号:420014)。

摘　　要：长链烷烃异构化作为一种重要的油品品质改进技术,被广泛应用于生产高品质清洁油品。长链烷烃异构化反应通常采用双功能分子筛催化剂,其中金属活性中心提供加氢-脱氢功能,分子筛提供适宜酸性中心和适宜孔道结构实现异构化功能,因此对分子筛进行酸性和孔道结构改性调节是提升异构化反应性能的主要方法之一。结合国内外研究进展,详细论述了离子交换改性、分子筛脱铝改性、分子筛脱硅改性及杂原子处理等不同改性方式对分子筛物化性质影响和作用机理及其对长链烷烃异构化反应性能的影响,并结合研究现状对长链烷烃异构化分子筛改性研究进行总结和展望。与单一分子筛改性方式相比,采用多种改性方法的联用对分子筛酸性质和孔道结构的调控更具适用性与灵活性。As an important oil quality improvement technology,long-chain alkane isomerization is widely used in the production of high-quality clean oil.The isomerization reaction of long-chain alkanes usually adopts bifunctional molecular sieve catalysts,in which metal active center provides the hydrogenation-dehydrogenation function and zeolites provides the suitable acidic center and pore structure to achieve the isomerization function.Therefore,modification of zeolites to adjust its acidity and pore structure is one of the main methods to improve the performance of the isomerization reaction.Combined with the research progress at domestic and international,various methods of modification,such as ion-exchange modification,de-alumination modification,desilication modification and heteroatom loaded treatment,on physical and chemical properties of zeolites,were discussed in detail.The effects of these modifications on the performance of isomerization reactions of long-chain alkanes were also explained.Additionally,an outlook of zeolites modification for isomerization of long-chain alkanes was presented with reference to the current research status.Compared to the single zeolite modification method,the modulation for acid properties and pore structure of zeolite by the combination of multiple modification methods were more applicable and flexible.

关 键 词：长链正构烷烃 加氢异构化 酸性 孔道结构 分子筛改性 

分 类 号：TE624[石油与天然气工程—油气加工工程]