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介孔钛硅分子筛TS-1的合成及催化环己酮氨肟化反应性能
Synthesization and Performance Evaluation of TS-1 Molecular Sieve for Ammoximation of Cyclohexanone
  
DOI:
中文关键词:  钛硅分子筛;环己酮;氨肟化反应;催化;环己酮肟
英文关键词:titanium silicon molecular sieve; cyclohexanone; ammoximation; catalyze ;cyclohexanoneoxime
基金项目:南昌大学学报(理科版) 2016-10-25广东省科技厅项目(2015A010105003)
作者单位
李小玉 中山火炬职业技术学院 
蒋建平 中山火炬职业技术学院 
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中文摘要:
      采用水热法合成了钛硅分子筛TS-1,并对其进行扩孔改性。运用XRD、FT-IR、UV-vis、N2吸-脱附等温曲线法对改性前后TS-1进行表征分析,并考察了其对环己酮氨肟化反应的催化活性评。结果表明:实验制备的TS-1分子筛具有典型MFI 拓扑结构,且钛原子已进入TS-1分子筛骨架形成活性中心。TPAOH扩孔改性后的TS-1分子筛具有介孔结构,对环己酮氨肟化反应的转化率和选择性分别提高了33.32%和31.83%,达98.73%和98.54%。此外,TS-1分子筛活性下降归因于分子筛孔道被有机物或积碳堵塞,经焙烧再生后可恢复其活性。
英文摘要:
      The titanium silicon molecular sieve (TS-1) was synthesized by hydrothermal method, and the pore-enlarging modification on TS-1 was carried out subsequently. The TS-1 and modified TS-1 catalysts were characterized by XRD, FT-IR, UV-vis and N2 adsorption-desorption methods, and the catalytic activity on cyclohexanone ammoximation reaction was investigated. The results indicated that all of TS-1 we prepaired possessed a typical MFI topology with titanium atoms entering into the TS-1 framework. The TS-1 modified by TPAOH had mesoporous structure,and it’s conversion and selectivity on cyclohexanone ammoximation reaction were significantly increased by 33.32% and 31.83%, amounting to 98.73% and 98.54% respectively. Further more, the activity of TS-1 zeolite molecular sieve was attributed to the decline in organic matter or deposition, whose activity could be regenerated by calcination.
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