Effects of organic solvents on the structure stability of TS-1 for the ammoximation of cyclohexanone |
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| Authors: | Chengtian Wu Yaquan Wang Zhentao Mi Li Xue Wei Wu Enze Min Sen Han Fei He and Songbao Fu |
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| Institution: | (1) State Key Laboratory of C1 Chemical Technology, Tianjin University, Tianjin, 300072, P. R. of China;(2) Research Institute of Petroleum Processing SINOPEC, Beijing, 100083, P. R. of China;(3) Research Institute of Yingshan Petrochemical Plant, Yueyang, 414003, P. R. of China |
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| Abstract: | The effects of organic solvents on the ammoximation of cyclohexanone to cyclohexanone oxime with H2O2and NH3 over TS-1 were studied. To investigate the effects of ammonia and organic solvents on the structure stability of the catalyst, TS-1 samples were pretreated under severe conditions in ammonia solution or ammonia solution plus methanol, toluene or t-butanol, respectively, and then characterized bySEM, XRD, FTIR, etc. The results revealed that t-butanol is the best solvent for the ammoximation reaction; ammonia tends to destroy the active sites, -Ti-O-Si- structure in TS-1, but the presence of organic solvents remarkably limits this damaging effect of ammonia. |
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| Keywords: | cyclohexanone oxime FTIR Cyclohexanone TS-1 ammoximation |
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