糠醇
糠醛
催化作用
X射线光电子能谱
化学
解吸
氧气
化学工程
吸附
材料科学
有机化学
工程类
作者
Hui Yang,Hao Chen,Wenhua Zhou,Haoan Fan,Chao Chen,Jing Li,Bolong Li,Jianghao Wang,Jie Fu
出处
期刊:Fuel
[Elsevier]
日期:2023-12-01
卷期号:354: 129388-129388
标识
DOI:10.1016/j.fuel.2023.129388
摘要
As energy and CO2 concerns have become important aspects of scientific research, researchers are focusing on the development of alternative and green energies. Biomass is a significant energy source due to its cyclic utilization process and ability to renew CO2. The catalytic transfer hydrogenation (CTH) of sugar-derived furfural (FF) into furfuryl alcohol (FA) has attracted increasing attention; however, designing and synthesizing efficient nonnoble catalysts remains challenging. In this work, an oxygen defect-abundant LaMnO3 perovskite (R-LM4C-3h) was synthesized by combining the advantages of both Co heteroatom doping and H2 reduction. Raman, O2 temperature programmed desorption (O2-TPD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and electrochemical impedance spectroscopy (EIS) characterizations revealed that R-LM4C-3h exhibited abundant oxygen defects that improved its electronic properties. As a result, adsorption ability for FF was enhanced, the reaction energy barrier was decreased, and CTH catalytic activity was promoted. A 93.6 mol% FA yield with 100 % FF conversion was achieved using ethanol as the hydrogen source. The oxygen defect-mediated catalyst also exhibited excellent stability with almost no activity reduction after 5 cycles. This surface reconstruction strategy for obtaining perovskites by fabricating abundant oxygen defects provides a superior opportunity to better explore the structure–function relationship of catalysts and develop efficient nonnoble metal-based catalysts.
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