催化作用
化学
介孔材料
尖晶石
肉桂醛
肉桂醇
产量(工程)
碳纤维
吸附
解吸
活化能
无机化学
材料科学
复合数
有机化学
冶金
复合材料
作者
Weizhong Mao,Junhua Liu,Bingqian Yin,Shiwen Miao,Yafei Li,Deyu Kong,Fang Wang
标识
DOI:10.1016/j.mcat.2022.112257
摘要
We present a simple catalyst preparation route, that is spinel-structured CoCrOx (1:2) loaded on N-doped carbon (CoCrOx (1:2)-CN). The as-synthesized CoCrOx (1:2)-CN catalyst promoted catalytic hydrogen transfer (CTH) of cinnamaldehyde (CMA), affording cinnamyl alcohol (CMO) yield as high as 95.3% under mild reaction conditions. There are several reasons for the high yield of CMA: (a) Through interfacial electron migration and N-doped carbon, the acidity and basicity of mesoporous CoCrOx (1:2)-CN catalyst were enhanced, thereby achieving optimal acid-base synergy. (b) Kinetic studies indicated that spinel-structure and N-doped carbon could increase the reaction rate and achieve a low activation energy (69.2 kJ/mol). (c) DFT calculations revealed that both pyridyl-N and pyrrolyl-N doping lowered the energy barrier for adsorption and desorption of reactants resulting in improved catalytic activity. In addition, the CoCrOx (1:2)-CN catalyst showed good reusability.
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