文献类型：期刊文献

英文题名：Efficient depolymerization of sodium lignosulfonate assisted by sulfur migration

作者：Lin, Xiaoyu[1,2];Ding, Wenbin[1,2];Shi, Gaojie[1,2];Yan, Bochao[1,2];Zhang, Suping[1,2]

机构：[1]East China Univ Sci & Technol, Minist Educ, Engn Res Ctr Resource Utilizat Carbon Containing W, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Biomass Energy, Sch Resources & Environm Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：252

外文期刊名：FUEL PROCESSING TECHNOLOGY

收录：;EI(收录号：20234014817609);WOS:【SCI-EXPANDED(收录号:WOS:001088584500001)】；

基金：This work was supported financially by the National Key R & D Pro-gram of China (2018YFB1501601) .

语种：英文

外文关键词：Sodium lignosulfonate; Depolymerization; In-situ sulfidation; Bio-oils

摘要：Lignosulfonate (LS), as the most abundant technical lignin, is hard to depolymerize due to highly condensed structure. To overcome the limitation, in this work, NiMoO4/Al2O3 catalyst with regulated acidity/hydrogenation activity was developed for highly efficient LS depolymerization. Results show that the performance of NiMoO4/Al2O3 was improved by sulfur migration. Meanwhile Ni-Mo alloy contributed to the good stability during LS depolymerization. The NiMoO4/Al2O3 was favor for the intermediate compounds production by the cleavage of C-O and C-C bonds, which intermediate compounds were eventually hydrogenated to monomers by highly active MoS2. Also, NiMoO4/Al2O3 and sulfonic groups play a synergistic role in the sulfur migration (only 39.1% bio-oil yield obtained by MoS2/Al2O3). After reacting at 300 degrees C for 4 h, 81.7% of bio-oil yield with 95% desulfurization rate were obtained. Thus, it was demonstrated that an inexpensive catalyst was developed which can efficiently catalyze the depolymerization of lignosulfonate.