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.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
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
