沸石分子筛表面酸性表征与研究进展  

Progress in characterization of and research on surface acidity of zeolites

作　　者：袁程远[1] 潘志爽[1] 丁伟[1] 高雄厚[1] 

机构地区：[1]中国石油天然气股份有限公司兰州化工研究中心,甘肃兰州730060

出　　处：《工业催化》2014年第4期245-251,共7页Industrial Catalysis

摘　　要：作为固体酸,沸石分子筛是重要的石油炼制与化工催化剂,表面酸性的数量、类型以及强度等决定其催化性能。表征与研究沸石分子筛表面酸性对于设计和开发高性能沸石分子筛催化剂意义重大。沸石分子筛表面酸性表征方法主要有吸附指示剂滴定法、程序升温脱附法、核磁共振法和红外光谱法等。以沸石分子筛表面酸性表征方法为主线,综述近年来对沸石分子筛表面酸性的表征与研究进展,重点介绍红外光谱法在沸石分子筛表面酸性表征与研究中的应用。指出通过对沸石分子筛表面酸性进行表征,将获得的表面酸性与其相应的催化性能关联,从反应机理理解并建立分子筛表面酸性与催化性能之间的关系将是今后的研究重点。As the solid acids,zeolites have been considered to be the most important catalysts for petro- chemical processes. The amounts, types and strength of their surface acidity sites have crucial effects on their catalytic performance. Consequently, the characterization of and research on surface acidity of the zeolites are of great significance for the design and development of new zeolite catalysts with high perform- ance. The characterization methods for surface acidity of the zeolites mainly have adsorption indicator titra- tion, TPD, NMR and FT-IR. In this paper, the recent advance in characterization of and research on sur- face acidity of the zeolites was reviewed, and the method of FT-IR was mainly introduced. It was pointed out that the correlation between the surface acidity and corresponding catalytic performance was obtained. Based on reaction mechanism, the researches on the relationship between the surface acidity and catalytic performance of zeolites in future are focused on.

关 键 词：催化化学 沸石分子筛 表面酸性 酸性表征 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]