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Catalytic oxidation of ethyl acetate over LaBO₃ (B = Co, Mn, Ni, Fe) perovskites supported silver catalysts

Author:
Qin, Yu, Shen, Fangxia, Zhu, Tianle, Hong, Wei, Liu, Xiaolong
Source:
RSC advances 2018 v.8 no.58 pp. 33425-33431
ISSN:
2046-2069
Subject:
X-ray diffraction, X-ray photoelectron spectroscopy, byproducts, carbon dioxide, catalysts, catalytic activity, cobalt, ethyl acetate, iron, lanthanum, manganese, nickel, oxidation, silver, transmission electron microscopy
Abstract:
A series of silver catalysts supported on lanthanum based perovskites LaBO₃ (B = Co, Mn, Ni, Fe) were synthesized and evaluated in the catalytic oxidation of ethyl acetate. XRD, BET, TEM/HRTEM, HAADF-STEM, XPS and H₂-TPR were conducted, and the results indicate that redox activity of the catalysts is of great importance to the oxidation reaction. Activity tests demonstrated that Ag/LaCoO₃ was more active than the other samples in ethyl acetate oxidation. Moreover, the CO₂ selectivity, COₓ yields and byproduct distributions for all catalysts were studied, and Ag/LaCoO₃ showed the best catalytic performance. Besides, Ag/LaCoO₃ also showed excellent catalytic activity for other OVOCs.
Agid:
6171886