Selective liquid-phase oxidation of cyclopentene over MWW type titanosilicate

Peng Wu; Duangamol Nuntasri; Yueming Liu; Haihong Wu; Yongwen Jiang; Weibin Fan; Mingyuan He; Takashi Tatsumi

doi:10.1016/j.cattod.2006.05.014

Selective liquid-phase oxidation of cyclopentene over MWW type titanosilicate

Peng Wu, Duangamol Nuntasri, Yueming Liu, Haihong Wu, Yongwen Jiang, Weibin Fan, Mingyuan He, Takashi Tatsumi

School of Chemistry and Molecular Engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The epoxidation of cyclopentene has been carried out over titanosilicate catalysts of Ti-Beta, TS-1 and Ti-MWW. Ti-MWW exhibited the highest cyclopentene conversion and epoxide selectivity with either H₂O₂ or tert-butyl hydroperoxide as an oxidizing agent. The cyclopentene conversion depended greatly on the post treatment conditions. Acid-treated but uncalcined Ti-MWW gave cyclopentene conversion twice as high as the calcined one, while the epoxide selectivity was maintained at high levels in both cases. Various techniques such as XRD, UV-vis, ²⁹Si MAS NMR, N₂ adsorption and liquid-phase adsorption, and chemical analyses have verified consistently that the acid treatment removed the organic species located between the layers of MWW sheets, which made the interlayer entrance open and easily accessible to bulky molecules. Nevertheless, a further calcination led to a complete interlayer dehydroxyaltion and made the catalyst to be more effective for the epoxidation of linear alkenes but less active for the epoxidation of cyclic ones.

Original language	English
Pages (from-to)	199-205
Number of pages	7
Journal	Catalysis Today
Volume	117
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cattod.2006.05.014
State	Published - 30 Sep 2006

Keywords

Cyclopentene
Hydrogen peroxide
Liquid-phase epoxidation
Post modification
Ti-MWW

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10.1016/j.cattod.2006.05.014

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title = "Selective liquid-phase oxidation of cyclopentene over MWW type titanosilicate",

abstract = "The epoxidation of cyclopentene has been carried out over titanosilicate catalysts of Ti-Beta, TS-1 and Ti-MWW. Ti-MWW exhibited the highest cyclopentene conversion and epoxide selectivity with either H2O2 or tert-butyl hydroperoxide as an oxidizing agent. The cyclopentene conversion depended greatly on the post treatment conditions. Acid-treated but uncalcined Ti-MWW gave cyclopentene conversion twice as high as the calcined one, while the epoxide selectivity was maintained at high levels in both cases. Various techniques such as XRD, UV-vis, 29Si MAS NMR, N2 adsorption and liquid-phase adsorption, and chemical analyses have verified consistently that the acid treatment removed the organic species located between the layers of MWW sheets, which made the interlayer entrance open and easily accessible to bulky molecules. Nevertheless, a further calcination led to a complete interlayer dehydroxyaltion and made the catalyst to be more effective for the epoxidation of linear alkenes but less active for the epoxidation of cyclic ones.",

keywords = "Cyclopentene, Hydrogen peroxide, Liquid-phase epoxidation, Post modification, Ti-MWW",

author = "Peng Wu and Duangamol Nuntasri and Yueming Liu and Haihong Wu and Yongwen Jiang and Weibin Fan and Mingyuan He and Takashi Tatsumi",

year = "2006",

month = sep,

day = "30",

doi = "10.1016/j.cattod.2006.05.014",

language = "英语",

volume = "117",

pages = "199--205",

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T1 - Selective liquid-phase oxidation of cyclopentene over MWW type titanosilicate

AU - Wu, Peng

AU - Nuntasri, Duangamol

AU - Liu, Yueming

AU - Wu, Haihong

AU - Jiang, Yongwen

AU - Fan, Weibin

AU - He, Mingyuan

AU - Tatsumi, Takashi

PY - 2006/9/30

Y1 - 2006/9/30

N2 - The epoxidation of cyclopentene has been carried out over titanosilicate catalysts of Ti-Beta, TS-1 and Ti-MWW. Ti-MWW exhibited the highest cyclopentene conversion and epoxide selectivity with either H2O2 or tert-butyl hydroperoxide as an oxidizing agent. The cyclopentene conversion depended greatly on the post treatment conditions. Acid-treated but uncalcined Ti-MWW gave cyclopentene conversion twice as high as the calcined one, while the epoxide selectivity was maintained at high levels in both cases. Various techniques such as XRD, UV-vis, 29Si MAS NMR, N2 adsorption and liquid-phase adsorption, and chemical analyses have verified consistently that the acid treatment removed the organic species located between the layers of MWW sheets, which made the interlayer entrance open and easily accessible to bulky molecules. Nevertheless, a further calcination led to a complete interlayer dehydroxyaltion and made the catalyst to be more effective for the epoxidation of linear alkenes but less active for the epoxidation of cyclic ones.

AB - The epoxidation of cyclopentene has been carried out over titanosilicate catalysts of Ti-Beta, TS-1 and Ti-MWW. Ti-MWW exhibited the highest cyclopentene conversion and epoxide selectivity with either H2O2 or tert-butyl hydroperoxide as an oxidizing agent. The cyclopentene conversion depended greatly on the post treatment conditions. Acid-treated but uncalcined Ti-MWW gave cyclopentene conversion twice as high as the calcined one, while the epoxide selectivity was maintained at high levels in both cases. Various techniques such as XRD, UV-vis, 29Si MAS NMR, N2 adsorption and liquid-phase adsorption, and chemical analyses have verified consistently that the acid treatment removed the organic species located between the layers of MWW sheets, which made the interlayer entrance open and easily accessible to bulky molecules. Nevertheless, a further calcination led to a complete interlayer dehydroxyaltion and made the catalyst to be more effective for the epoxidation of linear alkenes but less active for the epoxidation of cyclic ones.

KW - Cyclopentene

KW - Hydrogen peroxide

KW - Liquid-phase epoxidation

KW - Post modification

KW - Ti-MWW

UR - https://www.scopus.com/pages/publications/33747823246

U2 - 10.1016/j.cattod.2006.05.014

DO - 10.1016/j.cattod.2006.05.014

M3 - 文章

AN - SCOPUS:33747823246

SN - 0920-5861

VL - 117

SP - 199

EP - 205

JO - Catalysis Today

JF - Catalysis Today

IS - 1-3

ER -

Selective liquid-phase oxidation of cyclopentene over MWW type titanosilicate

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Keywords

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