Hongji Li
Dalian Institute of Chemical Physics
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Publication
Featured researches published by Hongji Li.
Green Chemistry | 2016
Chaofeng Zhang; Jianmin Lu; Xiaochen Zhang; Katherine E. MacArthur; Marc Heggen; Hongji Li; Feng Wang
The efficient cleavage of lignin β-O-4 ether bonds to produce aromatics is a challenging and attractive topic. Recently a growing number of studies have revealed that the initial oxidation of CαHOH to CαO can decrease the β-O-4 bond dissociation energy (BDE) from 274.0 kJ mol−1 to 227.8 kJ mol−1, and thus the β-O-4 bond is more readily cleaved in the subsequent transfer hydrogenation, or acidolysis. Here we show that the first reaction step, except in the above-mentioned pre-oxidation methods, can be a Cα–OH bond dehydroxylation to form a radical intermediate on the acid-redox site of a NiMo sulfide catalyst. The formation of a Cα radical greatly decreases the Cβ–OPh BDE from 274.0 kJ mol−1 to 66.9 kJ mol−1 thereby facilitating its cleavage to styrene, phenols and ethers with H2 and an alcohol solvent. This is supported by control experiments using several reaction intermediates as reactants, analysis of product generation and by radical trap with TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) as well as by density functional theory (DFT) calculations. The dehydroxylation–hydrogenation reaction is conducted under non-oxidative conditions, which are beneficial for stabilizing phenol products.
ACS Catalysis | 2016
Min Wang; Jianmin Lu; Xiaochen Zhang; Lihua Li; Hongji Li; Nengchao Luo; Feng Wang
ACS Catalysis | 2017
Chaofeng Zhang; Hongji Li; Jianmin Lu; Xiaochen Zhang; Katherine E. MacArthur; Marc Heggen; Feng Wang
ACS Catalysis | 2016
Nengchao Luo; Min Wang; Hongji Li; Jian Zhang; Huifang Liu; Feng Wang
ACS Catalysis | 2017
Nengchao Luo; Min Wang; Hongji Li; Jian Zhang; Tingting Hou; Haijun Chen; Xiaochen Zhang; Jianmin Lu; Feng Wang
ACS Catalysis | 2018
Min Wang; Xiaochen Zhang; Hongji Li; Jianmin Lu; Meijiang Liu; Feng Wang
ACS Catalysis | 2017
Tingting Hou; Nengchao Luo; Hongji Li; Marc Heggen; Jianmin Lu; Yehong Wang; Feng Wang
Journal of Catalysis | 2017
Min Wang; Jianmin Lu; Lihua Li; Hongji Li; Huifang Liu; Feng Wang
ACS Sustainable Chemistry & Engineering | 2018
Hongji Li; Min Wang; Huifang Liu; Nengchao Luo; Jianmin Lu; Chaofeng Zhang; Feng Wang
ACS Catalysis | 2018
Huifang Liu; Hongji Li; Jianmin Lu; Shu Zeng; Min Wang; Nengchao Luo; Shutao Xu; Feng Wang