TY - JOUR
T1 - Epoxidation of 2,5-dihydrofuran to 3,4-epoxytetrahydrofuran over Ti-MWW catalysts
AU - Wu, Haihong
AU - Liu, Yueming
AU - Wang, Lingling
AU - Zhang, Haijiao
AU - He, Mingyuan
AU - Wu, Peng
PY - 2007/3/22
Y1 - 2007/3/22
N2 - Liquid-phase epoxidation of 2,5-dihydrofuran (DHF, 1-oxa-3-cyclopentene) to 3,4-epoxytetrahydrofuran (ETHF) has been compared among various titanosilicate catalysts like Ti-MWW, TS-1, Ti-Beta and Ti-MOR. The effects of Ti content as well as the reaction conditions such as solvent, catalyst amount, reaction temperature and time have been studied on Ti-MWW in detail. The Ti-MWW catalyst, capable of giving a conversion >95% and an epoxide selectivity >99%, was much more active and selective than the others. The 2,5-DHF epoxidation over Ti-MWW preferred water or acetonitrile as a solvent in which the solvolysis of 3,4-ETHF and the reactions on the allylic positions of 2,5-DHF were limited to an extremely low level. The deactivation of Ti-MWW was essentially due to the deposition of heavy organic species inside pore. It turned to be reusable when subjected to the regeneration by high-temperature calcination.
AB - Liquid-phase epoxidation of 2,5-dihydrofuran (DHF, 1-oxa-3-cyclopentene) to 3,4-epoxytetrahydrofuran (ETHF) has been compared among various titanosilicate catalysts like Ti-MWW, TS-1, Ti-Beta and Ti-MOR. The effects of Ti content as well as the reaction conditions such as solvent, catalyst amount, reaction temperature and time have been studied on Ti-MWW in detail. The Ti-MWW catalyst, capable of giving a conversion >95% and an epoxide selectivity >99%, was much more active and selective than the others. The 2,5-DHF epoxidation over Ti-MWW preferred water or acetonitrile as a solvent in which the solvolysis of 3,4-ETHF and the reactions on the allylic positions of 2,5-DHF were limited to an extremely low level. The deactivation of Ti-MWW was essentially due to the deposition of heavy organic species inside pore. It turned to be reusable when subjected to the regeneration by high-temperature calcination.
KW - 2,5-Dihydrofuran
KW - 3,4-Epoxytetrahydrofuran
KW - Liquid-phase epoxidation
KW - TS-1
KW - Ti-MWW
UR - https://www.scopus.com/pages/publications/33847249378
U2 - 10.1016/j.apcata.2007.01.027
DO - 10.1016/j.apcata.2007.01.027
M3 - 文章
AN - SCOPUS:33847249378
SN - 0926-860X
VL - 320
SP - 173
EP - 180
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -