Efficient Aerobic Oxidation of Ethyl Lactate to Ethyl
Pyruvate over V2O5/g‑C3N4 Catalysts
Posted on 2020-06-25 - 18:33
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carbon nitride (g-C3N4)-supported
V2O5 catalysts were prepared by the impregnation
pyrolysis method, and their physicochemical properties were characterized
by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier
transform infrared (FT-IR), Raman, X-ray photoelectron spectroscopy
(XPS), UV–vis, TGA, N2 adsorption, and H2-TPR. These catalysts exhibit extremely high activity and selectivity
in the aerobic oxidation of ethyl lactate to ethyl pyruvate. The excellent
catalytic performance derives from the high surface-chemisorbed oxygen
species. Low calcination temperature and interaction with g-C3N4 are conducive to increasing the surface-chemisorbed
oxygen species of V2O5. The optimal catalyst
13V2O5/g-C3N4 gives 96.2%
conversion of ethyl lactate with 85.6% selectivity toward ethyl pyruvate
in 4 h at 130 °C and 1 atm oxygen, which is significantly superior
to those of previously reported V-containing catalysts. This catalyst
is also stable and reusable, and the ethyl pyruvate yield is reduced
by less than 10% after four runs without any regeneration treatment.
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Wu, Jiequn; Hua, Weiming; Yue, Yinghong; Gao, Zi (2020). Efficient Aerobic Oxidation of Ethyl Lactate to Ethyl
Pyruvate over V2O5/g‑C3N4 Catalysts. ACS Publications. Collection. https://doi.org/10.1021/acsomega.0c01822
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AUTHORS (4)
JW
Jiequn Wu
WH
Weiming Hua
YY
Yinghong Yue
ZG
Zi Gao