TY - JOUR
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
N1 - Publisher Copyright:
© 2017, Science China Press and Springer-Verlag Berlin Heidelberg.
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 -