Defect engineered efficient catalytic transfer hydrogenation of furfural to furfuryl alcohol in ethanol by Co-doped LaMnO3

被引:12
|
作者
Yang, Hui [1 ,4 ]
Chen, Hao [3 ]
Zhou, Wenhua [1 ,2 ]
Fan, Haoan [1 ,2 ]
Chen, Chao [1 ,2 ]
Li, Jing [1 ]
Li, Bolong [1 ,2 ]
Wang, Jianghao [1 ,2 ]
Fu, Jie [1 ,2 ]
机构
[1] Zhejiang Univ, Minist Educ, Coll Chem & Biol Engn, Key Lab Biomass Chem Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] Inst Zhejiang Univ Quzhou, Quzhou 324000, Zhejiang, Peoples R China
[3] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China
[4] Beibu Gulf Univ, Coll Petr & Chem Engn, Guangxi Key Lab Green Chem Mat & Safety Technol, Qinzhou 535000, Guangxi, Peoples R China
关键词
Perovskite; Co doping; Oxygen defects; Catalytic transfer hydrogenation; Furfural; OXYGEN-VACANCY; PEROVSKITE OXIDES; CONVERSION; DEGRADATION; TRANSITION; OXIDATION; BIOMASS; FACILE;
D O I
10.1016/j.fuel.2023.129388
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
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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页数:8
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