分子筛催化剂的酸性表征及研究进展  

Acidity characterization and research progress of zeolite catalysts

作　　者：刘晓华 黄文氢[1] 柳颖 王斌[1] 殷杰[1] 姜健准[1] Liu Xiaohua;Huang Wenqing;Liu Ying;Wang Bin;Yin Jie;Jiang Jianzhun(Sinopec Beijing Research Institute of Chemical Industry,Beijing 100013,China)

机构地区：[1]中国石化北京化工研究院

出　　处：《石油化工》2019年第10期1084-1092,共9页Petrochemical Technology

摘　　要：综述了近年来分子筛表面酸性的表征与研究进展,主要介绍了吸附指示剂滴定法、程序升温脱附法、红外光谱法和核磁共振法,并比较了这些方法的优缺点。目前,人们广泛使用的是程序升温脱附法和红外光谱法,前者可以准确地分析总酸量和酸强度,但不能区分酸的类型;后者虽然可以区分B酸和L酸,但对酸强度和总酸量的定量分析不是很理想。随着固体核磁共振方法和高场光谱仪的发展,固体核磁共振已经成为解决分子筛体系中各种基本科学问题的重要工具。The characterization and research progress on surface acidity in recent years are reviewed. The adsorption indicator titration method,temperature programmed desorption method,infrared spectroscopy method and nuclear magnetic resonance method are mainly introduced,and the advantages and disadvantages of these analytical methods are compared. At present,temperature programmed desorption and infrared spectroscopy are widely used. The former can accurately analyze the total acid amount and acid strength,however,it cannot distinguish the acid types;although the latter can distinguish B acid and L acid,it is not an ideal method for acid strength analysis and quantitative analysis of total acid amount. With the development of solid-state NMR and high-field spectrometers,solid-state NMR has become an important tool for solving various basic scientific problems in zeolite system.

关 键 词：催化化学 分子筛催化剂 胺滴定 程序升温脱附 红外光谱 核磁共振 表面酸性 

分 类 号：TQ426[化学工程]