文献类型：期刊文献

英文题名：Synchronous conversion of lignocellulosic polysaccharides to levulinic acid with synergic bifunctional catalysts in a biphasic cosolvent system

作者：Feng, Junfeng[1,2,3] Tong, Le[1] Xu, Yangyang[1] Jiang, Jianchun[1] Hse, Chungyun[5] Yang, Zhongzhi[4,6] Pan, Hui[1,2]

第一作者：Feng, Junfeng

通信作者：Pan, H[1]

机构：[1]Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[2]Jiangsu Coinnovat Ctr Efficient Proc & Utilizat, Nanjing 210037, Jiangsu, Peoples R China;[3]Jiangsu Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[4]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[5]US Forest Serv, USDA, Southern Res Stn, Pineville, LA 71360 USA;[6]Univ Wisconsin, Dept Biol Syst Engn, Madison, WI 53716 USA

年份：2020

卷号：145

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20200408075990);Scopus(收录号：2-s2.0-85078145205);WOS:【SCI-EXPANDED(收录号:WOS:000518865400067)】；

基金：The authors gratefully acknowledge the financial support provided by the Research Grant of Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM201903) and National Natural Science Foundation of China (31770631) for this investigation. The authors also thank the Nanjing Forestry University scientific research start-up funds (GXL2018037) for this investigation.

语种：英文

外文关键词：Synchronous conversion; Lignocellulosic polysaccharides; Bifunctional catalysts; Biphasic cosolvent; Levulinic acid

摘要：Synchronous conversion of lignocellulosic polysaccharides to a high-value-added chemical (levulinic acid, LA) using various Bronsted-Lewis acids as bifunctional catalysts in a biphasic cosolvent system has been investigated. The results indicate that the coupling of Amberlyst 15 and Al-2(SO4)(3) as a bifunctional catalyst has a higher positive synergic influence on the synchronous conversion of cellulose and hemicellulose to LA than other mixed catalysts. The synergic effect of a Bronsted-Lewis acid was measured using a synergy factor; the Amberlyst 15-Al-2(SO4)(3) bifunctional catalyst showed the strongest synergic catalytic activity with a synergy factor of 1.90. The biphasic cosolvent combining water with dimethoxymethane promotes the transformation of furfural into hydroxymethylfurfural and facilitates the selectivity of LA. The results also demonstrated that the water-dimethoxymethane biphasic cosolvent is suitable for the synchronous conversion of hemicellulose and cellulose into LA with high yield (52.49 %). This study provides insights for the possible synergistically transformed mechanism of lignocellulosic polysaccharides according to the conversion of intermediates and products. This synchronous conversion of biomass with a synergistic system has great promise for preparing high-value-added chemicals from biomass.