Ti-silicalite as catalyst for gas-phase ammoximation of cyclohexanone with molecular oxygen |
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| Authors: | D P Dreoni D Pinelli F Trifirò Z Tvaruzkova H Habersberger P Jiru |
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| Affiliation: | (1) Department of Industrial Chemistry and Materials, V.le del Risorgimento, 4-40136 Bologna, Italy;(2) Heyrovsky Institute of Physical Chemistry and Electrochemistry Dolejskova, 3-18223 Praha, Czechoslovakia |
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| Abstract: | The catalyst behaviour of titanium silicalite, which was found the most active and selective catalyst for liquid-phase ammoximation of cyclohexanone to the corresponding oxime with hydrogen peroxide, was investigated in the gas-phase ammoximation with molecular oxygen in and compared with those of pure silicalite and samples of vanadium and chromium silicalites. The results showed that Ti-silicalite is a selective catalyst not only in the reaction with hydrogen peroxide but also in the reaction with molecular oxygen. However, a big limitation was found in the poor activity of the silicalites which do not allow to reach high oxime yields. |
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| Keywords: | Ammoximation of cyclohexanone Ti-silicalite oxidation catalyst |
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