Enhancement of alkene epoxidation activity of titanosilicates by gas-phase ammonia modification

Liyan Zhang; Le Xu; Jingjing Sun; Jingang Jiang; Yueming Liu; Haihong Wu; Peng Wu

doi:10.1002/cjoc.201200637

Enhancement of alkene epoxidation activity of titanosilicates by gas-phase ammonia modification

Liyan Zhang, Le Xu, Jingjing Sun, Jingang Jiang, Yueming Liu, Haihong Wu, Peng Wu

School of Chemistry and Molecular Engineering

East China Normal University

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

8 Scopus citations

Abstract

Novel ammonia-treated titanosilicates have been prepared by heating the samples of Ti-MWW, TS-1 and Ti-Beta under pure ammonia gas flow at 673 K for a period of time. The ammonia modification improved their catalytic performance in liquid-phase oxidations. Especially, the catalytic activities of ammonified Ti-MWW, N-Ti-MWW, were enhanced greatly in the epoxidation of 1-hexene with H ₂O ₂. The reason that the ammonia treatment played such an important role in post-modification of titanosilicate was investigated in details. In comparison to the parent Ti-MWW catalyst, N-Ti-MMW was more robust and produced less coke in oxidation reactions.

Original language	English
Pages (from-to)	2205-2211
Number of pages	7
Journal	Chinese Journal of Chemistry
Volume	30
Issue number	9
DOIs	https://doi.org/10.1002/cjoc.201200637
State	Published - Sep 2012

Keywords

Ti-MWW
ammonia
ammonification
epoxidation
titanosilicates

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10.1002/cjoc.201200637

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title = "Enhancement of alkene epoxidation activity of titanosilicates by gas-phase ammonia modification",

abstract = "Novel ammonia-treated titanosilicates have been prepared by heating the samples of Ti-MWW, TS-1 and Ti-Beta under pure ammonia gas flow at 673 K for a period of time. The ammonia modification improved their catalytic performance in liquid-phase oxidations. Especially, the catalytic activities of ammonified Ti-MWW, N-Ti-MWW, were enhanced greatly in the epoxidation of 1-hexene with H 2O 2. The reason that the ammonia treatment played such an important role in post-modification of titanosilicate was investigated in details. In comparison to the parent Ti-MWW catalyst, N-Ti-MMW was more robust and produced less coke in oxidation reactions.",

keywords = "Ti-MWW, ammonia, ammonification, epoxidation, titanosilicates",

author = "Liyan Zhang and Le Xu and Jingjing Sun and Jingang Jiang and Yueming Liu and Haihong Wu and Peng Wu",

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doi = "10.1002/cjoc.201200637",

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TY - JOUR

T1 - Enhancement of alkene epoxidation activity of titanosilicates by gas-phase ammonia modification

AU - Zhang, Liyan

AU - Xu, Le

AU - Sun, Jingjing

AU - Jiang, Jingang

AU - Liu, Yueming

AU - Wu, Haihong

AU - Wu, Peng

PY - 2012/9

Y1 - 2012/9

N2 - Novel ammonia-treated titanosilicates have been prepared by heating the samples of Ti-MWW, TS-1 and Ti-Beta under pure ammonia gas flow at 673 K for a period of time. The ammonia modification improved their catalytic performance in liquid-phase oxidations. Especially, the catalytic activities of ammonified Ti-MWW, N-Ti-MWW, were enhanced greatly in the epoxidation of 1-hexene with H 2O 2. The reason that the ammonia treatment played such an important role in post-modification of titanosilicate was investigated in details. In comparison to the parent Ti-MWW catalyst, N-Ti-MMW was more robust and produced less coke in oxidation reactions.

AB - Novel ammonia-treated titanosilicates have been prepared by heating the samples of Ti-MWW, TS-1 and Ti-Beta under pure ammonia gas flow at 673 K for a period of time. The ammonia modification improved their catalytic performance in liquid-phase oxidations. Especially, the catalytic activities of ammonified Ti-MWW, N-Ti-MWW, were enhanced greatly in the epoxidation of 1-hexene with H 2O 2. The reason that the ammonia treatment played such an important role in post-modification of titanosilicate was investigated in details. In comparison to the parent Ti-MWW catalyst, N-Ti-MMW was more robust and produced less coke in oxidation reactions.

KW - Ti-MWW

KW - ammonia

KW - ammonification

KW - epoxidation

KW - titanosilicates

UR - https://www.scopus.com/pages/publications/84866974981

U2 - 10.1002/cjoc.201200637

DO - 10.1002/cjoc.201200637

M3 - 文章

AN - SCOPUS:84866974981

SN - 1001-604X

VL - 30

SP - 2205

EP - 2211

JO - Chinese Journal of Chemistry

JF - Chinese Journal of Chemistry

IS - 9

ER -

Enhancement of alkene epoxidation activity of titanosilicates by gas-phase ammonia modification

Abstract

Keywords

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