文献类型：期刊文献

英文题名：Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating

作者：Liu, Peng[1] Chen, Changzhou[1] Zhou, Minghao[2] Xia, Haihong[1] Li, Jing[1] Sharma, Brajendra K.[3] Jiang, Jianchun[1]

第一作者：刘朋

通信作者：Zhou, MH[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,SFA, Natl Engn Lab Biomass Chem Utilizat,Key & Open La, Nanjing 210042, Jiangsu, Peoples R China;[2]Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China;[3]Univ Illinois, Illinois Sustainable Technol Ctr, Prairie Res Inst, One Hazelwood Dr, Champaign, IL 61820 USA

年份：2021

卷号：45

期号：18

起止页码：8258-8268

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20212010373429);Scopus(收录号：2-s2.0-85105845402);WOS:【SCI-EXPANDED(收录号:WOS:000642221800001)】；

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

语种：英文

外文关键词：Catalyst activity - Depolymerization - Dimers - Lignin - Microwave heating - Petroleum industry

摘要：Microwave assisted lignin depolymerization was investigated over HSZ-supported CuNiAl-based catalysts. The synergistic effect between the acidic HSZ support and mixed metal oxides was studied in detail to explore the difference in catalytic activity during the lignin depolymerization process. Improvements in bio-oil properties, such as the H/C ratio and HHV value, were observed in comparison with raw lignin under rather mild conditions (140 degrees C, 80 min) in the absence of external hydrogen. The molecular weight of bio-oil obtained over HSZ-supported catalysts decreased, indicating that the increased acidity in the catalyst could facilitate microwave assisted lignin depolymerization. The product distributions in bio-oil were also analyzed and plausible depolymerization mechanisms were proposed considering the distributions of lignin-derived dimers/trimers and monomers.