文献类型：期刊文献

英文题名：Eco-friendly preparation of ultrathin biomass-derived Ni3S2-doped carbon nanosheets for selective hydrogenolysis of lignin model compounds in the absence of hydrogen

作者：Chen, Changzhou[1,2,3,4,6] Wu, Dichao[1,2,3,4,6] Liu, Peng[1,2,3,4,6] Li, Jing[1,2,3,4,6] Xia, Haihong[1,2,3,4,6] Zhou, Minghao[5] Jiang, Jianchun[1,2,3,4,6]

第一作者：Chen, Changzhou

通信作者：Zhou, MH[1];Jiang, JC[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[4]SFA, Key & Open Lab Forest Chem Engn, Nanjing 210042, Peoples R China;[5]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China;[6]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China

年份：2021

卷号：23

期号：8

起止页码：3090-3103

外文期刊名：GREEN CHEMISTRY

收录：;EI(收录号：20211910309903);Scopus(收录号：2-s2.0-85105177501);WOS:【SCI-EXPANDED(收录号:WOS:000640685800001)】；

基金：The authors are grateful for the financial support from the National Natural Science Foundation of China (31890773 and 31700645).

语种：英文

外文关键词：Alkalinity - Ammonia - Carbon - Ethers - Hydrogen - Hydrogen fuels - Hydrogenolysis - Hydrolysis - Lignin - Nanocatalysts - Nanosheets

摘要：Lignin is an abundant source of aromatics, and the depolymerization of lignin provides significant potential for producing high-value chemicals. Selective hydrogenolysis of the C-O ether bond in lignin is an important strategy for the production of fuels and chemical feedstocks. In our study, catalytic hydrogenolysis of lignin model compounds (beta-O-4, alpha-O-4 and 4-O-5 model compounds) over Ni3S2-CS catalysts was investigated. Hence, an array of 2D carbon nanostructure Ni3S2-CSs-X-Y derived catalysts were produced using different compositions at different temperatures (X = 0 mg, 0.2 mg, 0.4 mg, 0.6 mg, and 0.8 mg; Y = 600 degrees C, 700 degrees C, 800 degrees C, and 900 degrees C) were prepared and applied for hydrogenolysis of lignin model compounds and depolymerization of alkaline lignin. The highest conversion of lignin model compounds (beta-O-4 model compound) was up to 100% and the yield of the obtained corresponding ethylbenzene and phenol could achieve 92% and 86%, respectively, over the optimal Ni3S2-CSs-0.4-700 catalyst in iPrOH at 260 degrees C without external H-2. The 2D carbon nanostructure catalysts performed a good dispersion on the surface of the carbon nanosheets, which facilitated the cleavage of the lignin ether bonds. The physicochemical characterization studies were carried out by means of XRD, SEM, TEM, H-2-TPR, NH3-TPD, Raman and XPS analyses. Based on the optimal reaction conditions (260 degrees C, 4 h, 2.0 MPa N-2), various model compounds (beta-O-4, alpha-O-4 and 4-O-5 model compounds) could also be effectively hydrotreated to produce the corresponding aromatic products. Furthermore, the optimal Ni3S2-CSs-0.4-700 catalyst could be carried out in the next five consecutive cycle experiments with a slight decrease in the transformation of lignin model compounds.