Enhancement of Alkene Epoxidation Activity of Titanosilicates by Gas‐Phase Ammonia Modification | Zendy

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

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Enhancement of Alkene Epoxidation Activity of Titanosilicates by Gas‐Phase Ammonia Modification

Author(s) -

Zhang Liyan,

Xu Le,

Sun Jingjing,

Jiang Jingang,

Liu Yueming,

Wu Haihong,

Wu Peng

Publication year - 2012

Publication title -

chinese journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.28

H-Index - 41

eISSN - 1614-7065

pISSN - 1001-604X

DOI - 10.1002/cjoc.201200637

Subject(s) - chemistry , ammonia , catalysis , alkene , coke , gas phase , phase (matter) , hexene , inorganic chemistry , liquid phase , organic chemistry , thermodynamics , ethylene , physics

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 2 O 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.

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