Increasing the propylene epoxidation activity of TS-1 catalysts by hydrothermal treatment of ammonia solution |
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| Authors: | Na Liu Hongchen Guo Xiangsheng Wang Lixing Chen and Longjiang Zoub |
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| Institution: | (1) Department of Catalytic Chemistry and Engineering & State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China;(2) Department of Catalytic Chemistry and Engineering & State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China;(3) Department of Catalytic Chemistry and Engineering & State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China;(4) Department of Catalytic Chemistry and Engineering & State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, P. R. China;(5) Center of Measurement and Analysis of Materials, Dalian University of Technology, Dalian 116024, P.R. China |
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| Abstract: | Summary Treating titanium silicalite (TS-1) with ammonia solution under hydrothermal conditions proves to be an effective post-synthesis
modification method for improving TS-1 catalytic activity in propylene epoxidation. Characterizations indicate that the treated
TS-1 did not change TS-1 composition and generate more Ti (IV)-superoxide species (gz = 2.0265, gy = 2.0090, gx = 2.0022) when interacting with aqueous H2O2(30 wt.%) compared with the as-synthesized one.</o:p> |
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| Keywords: | modification Epoxidation Ti (IV)-superoxide species |
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