双硅源合成TS-1分子筛及其环己酮氨氧化性能  

SYNTHESIS OF TS-1 USING DOUBLE SILICON SOURCE AND ITS CATALYTIC PROPERTIES IN CYCLOHEXANONE AMMOXIMATION

作　　者：赵茜[1,2] 李平[1] 李道权[1] 周兴贵[1] 袁渭康[1] 胡喜军[3] 

机构地区：[1]华东理工大学化学工程国家重点联合实验室,上海200237 [2]河北工业大学化学工程与工艺系,天津300130 [3]香港科技大学化学工程系,香港

出　　处：《石油学报（石油加工）》2008年第B10期163-166,174,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金国际（地区）合作项目（NSFC-20518001,RGC-N-HKUST620/05）和高等学校学科创新引智计划项目（B08021）资助

摘　　要：同时以正硅酸乙酯（TEOS）和硅胶为硅源，采用水热合成法制备了TS-1分子筛。采用SEM、HRTEM、XRD和UV-Vis手段，对不同配比双硅源合成的TS-1样品进行了表征，并以环己酮氨氧化为探针反应对其催化性能进行了评价。结果表明，双硅源的配比影响合成TS-1的晶粒大小和骨架钛含量，从而影响TS-1的催化活性。双硅源中硅胶比例越大，合成的TS-1晶粒越大，催化活性越低。TEOS和硅胶摩尔配比为1时可以合成粒径均匀、催化活性良好的小颗粒TS-1。TS-1 zeolite was synthesized by hydrothermal method using both tetraethyl orthosilicate （TEOS） and silicon gel as the silicon source. Characterization techniques including SEM, HRTEM, XRD and UV-Vis spectroscopy were conducted to investigate the morphology and structure of different TS-1 zeolite particles. The catalytic behavior of TS-1 zeolite in the cyclohexanone ammoximation was also investigated. The impact of the molar ratio of TEOS to silicon gel was focused in the investigation. The results showed that the molar ratio of TEOS to silicon gel could greatly affect the particle size and titanium species in the framework of TS-1, which were related to the catalytic performance of TS-1. The higher the molar ratio of silicon gel in silicon source, the bigger the particle size and the lower the catalytic activity of TS-1. Nano-TS-1 synthesized under the TEOS/silicon gel （molar ratio） of 1 was of uniform small particle size and excellent performance during catalytic reaction.

关 键 词：TS-1 正硅酸乙酯 硅胶 环己酮 氨氧化 

分 类 号：TQ426[化学工程]