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- W2086091283 abstract "The preparation of the supported titanium silicalite-1 (TS-1) zeolite membrane with inexpensive tetrapropylammonium bromide (TPABr)/weak base synthesis system was studied by three methods, and the catalytic activity of the obtained TS-1 zeolite membrane was evaluated with the oxidation of 2-propanol (IPA) under pervaporation condition. It was found that TS-1 zeolite membrane could be successfully prepared with “seeding” or “seeding in situ” method, but could not be achieved with “in situ” method. Adding a little amount of promoter ions of PO43− into the synthesis gel was of benefit to the catalytic activity of the prepared TS-1 zeolite membrane, but had no obvious effect on the membrane layer formation on the mullite porous support. For “seeding” method, the membrane prepared with the synthesis gel having molar composition of SiO2:0.1TPABr:0.9Et2NH:0.03TiO2:80H2O:0.06H3PO4 at 150 °C for 48 h showed the highest oxidation conversion of IPA of 72% accompanied by a flux of 0.35 kg/m2 h. Further more, much higher IPA oxidation conversion of 76% accompanied by a flux of 0.65 kg/m2 h was obtained for the TS-1 zeolite membrane prepared with the same synthesis gel by “seeding in situ” method at 150 °C for 72 h." @default.
- W2086091283 created "2016-06-24" @default.
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- W2086091283 date "2009-03-01" @default.
- W2086091283 modified "2023-09-28" @default.
- W2086091283 title "Preparation and catalytic activity of titanium silicalite-1 zeolite membrane with TPABr as template" @default.
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- W2086091283 doi "https://doi.org/10.1016/j.memsci.2009.01.017" @default.
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