Liquid-phase oxidation of ethylamine to acetaldehyde oximes over tungsten-doped zeolites

Jianghong Ding; Hao Xu; Haihong Wu; Peng Wu

doi:10.1007/s11426-016-0480-y

Liquid-phase oxidation of ethylamine to acetaldehyde oximes over tungsten-doped zeolites

Jianghong Ding
, Hao Xu^*
, Haihong Wu
, Peng Wu

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

East China Normal University

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

8 Scopus citations

Abstract

The liquid-phase oxidation of ethylamine with hydrogen peroxide was studied over tungsten-doped zeolites to develop a clean and simple route for producing acetaldehyde oxime. The investigations were firstly performed over W/MOR, where the coordinated state as well as the acidity of the W species were characterized. The reaction parameters, including H₂O₂ amount, solvent, temperature, tungsten content as well as catalyst amount, governed the activity and oxime selectivity. Under optimized reaction conditions, W/MOR showed an ethylamine conversion and corresponding oxime selectivity of 18.3% and 88.9%. W/MOR showed a superior performance in comparison to other tungsten-containing zeolites of W/Beta, W/MWW and W/Y. Although W/MOR exhibited lower amine conversion than titanosilicates of TS-1 and Ti-MWW, it gave higher selectivity to the main product of oxime. Moreover, W/MOR proved to be a robust catalyst, exhibiting a stable catalytic performance after being reused at least for 5 times.

Original language	English
Pages (from-to)	942-949
Number of pages	8
Journal	Science China Chemistry
Volume	60
Issue number	7
DOIs	https://doi.org/10.1007/s11426-016-0480-y
State	Published - 1 Jul 2017

Keywords

acetaldehyde oxime
ethylamine oxidation
heterogeneous catalysis
tungsten-doped zeolite

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title = "Liquid-phase oxidation of ethylamine to acetaldehyde oximes over tungsten-doped zeolites",

abstract = "The liquid-phase oxidation of ethylamine with hydrogen peroxide was studied over tungsten-doped zeolites to develop a clean and simple route for producing acetaldehyde oxime. The investigations were firstly performed over W/MOR, where the coordinated state as well as the acidity of the W species were characterized. The reaction parameters, including H2O2 amount, solvent, temperature, tungsten content as well as catalyst amount, governed the activity and oxime selectivity. Under optimized reaction conditions, W/MOR showed an ethylamine conversion and corresponding oxime selectivity of 18.3\% and 88.9\%. W/MOR showed a superior performance in comparison to other tungsten-containing zeolites of W/Beta, W/MWW and W/Y. Although W/MOR exhibited lower amine conversion than titanosilicates of TS-1 and Ti-MWW, it gave higher selectivity to the main product of oxime. Moreover, W/MOR proved to be a robust catalyst, exhibiting a stable catalytic performance after being reused at least for 5 times.",

keywords = "acetaldehyde oxime, ethylamine oxidation, heterogeneous catalysis, tungsten-doped zeolite",

author = "Jianghong Ding and Hao Xu and Haihong Wu and Peng Wu",

note = "Publisher Copyright: {\textcopyright} 2017, Science China Press and Springer-Verlag Berlin Heidelberg.",

year = "2017",

month = jul,

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doi = "10.1007/s11426-016-0480-y",

language = "英语",

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T1 - Liquid-phase oxidation of ethylamine to acetaldehyde oximes over tungsten-doped zeolites

AU - Ding, Jianghong

AU - Xu, Hao

AU - Wu, Haihong

AU - Wu, Peng

PY - 2017/7/1

Y1 - 2017/7/1

N2 - The liquid-phase oxidation of ethylamine with hydrogen peroxide was studied over tungsten-doped zeolites to develop a clean and simple route for producing acetaldehyde oxime. The investigations were firstly performed over W/MOR, where the coordinated state as well as the acidity of the W species were characterized. The reaction parameters, including H2O2 amount, solvent, temperature, tungsten content as well as catalyst amount, governed the activity and oxime selectivity. Under optimized reaction conditions, W/MOR showed an ethylamine conversion and corresponding oxime selectivity of 18.3% and 88.9%. W/MOR showed a superior performance in comparison to other tungsten-containing zeolites of W/Beta, W/MWW and W/Y. Although W/MOR exhibited lower amine conversion than titanosilicates of TS-1 and Ti-MWW, it gave higher selectivity to the main product of oxime. Moreover, W/MOR proved to be a robust catalyst, exhibiting a stable catalytic performance after being reused at least for 5 times.

AB - The liquid-phase oxidation of ethylamine with hydrogen peroxide was studied over tungsten-doped zeolites to develop a clean and simple route for producing acetaldehyde oxime. The investigations were firstly performed over W/MOR, where the coordinated state as well as the acidity of the W species were characterized. The reaction parameters, including H2O2 amount, solvent, temperature, tungsten content as well as catalyst amount, governed the activity and oxime selectivity. Under optimized reaction conditions, W/MOR showed an ethylamine conversion and corresponding oxime selectivity of 18.3% and 88.9%. W/MOR showed a superior performance in comparison to other tungsten-containing zeolites of W/Beta, W/MWW and W/Y. Although W/MOR exhibited lower amine conversion than titanosilicates of TS-1 and Ti-MWW, it gave higher selectivity to the main product of oxime. Moreover, W/MOR proved to be a robust catalyst, exhibiting a stable catalytic performance after being reused at least for 5 times.

KW - acetaldehyde oxime

KW - ethylamine oxidation

KW - heterogeneous catalysis

KW - tungsten-doped zeolite

UR - https://www.scopus.com/pages/publications/85018962254

U2 - 10.1007/s11426-016-0480-y

DO - 10.1007/s11426-016-0480-y

M3 - 文章

AN - SCOPUS:85018962254

SN - 1674-7291

VL - 60

SP - 942

EP - 949

JO - Science China Chemistry

JF - Science China Chemistry

IS - 7

ER -

Liquid-phase oxidation of ethylamine to acetaldehyde oximes over tungsten-doped zeolites

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Keywords

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