文献类型：期刊文献

英文题名：Selective conversion of hemicellulose into furfural over low-cost metal salts in a gamma-valerolactone/water solution

作者：Liu, Chao[1] Wei, Linshan[1] Yin, Xiaoyan[1] Wei, Min[1] Xu, Junming[1,2] Jiang, Jianchun[1,2] Wang, Kui[1,2]

通信作者：Wang, K[1]

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

年份：2020

卷号：147

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20200808202746);Scopus(收录号：2-s2.0-85079592780);WOS:【SCI-EXPANDED(收录号:WOS:000521513200043)】；

基金：The authors would like to thank the National Natural Science Foundation of China (31600590, 31870714) and the Youth Talent Support Program for Science & Technology Innovation of National Forestry and Grassland (2019132603) for financial support.

语种：英文

外文关键词：Waste lignocellulosic biomass; Hemicellulose; Furfural; Metal salt; gamma-Valerolactone

摘要：Thermochemical conversion of biomass into platform chemicals and fuels is recognized as the most promising process for the partial substitution of fossil resources. Notably, selective liquefaction is a critical step for the integrated utilization of waste lignocellulosic biomass resources. Herein, we demonstrated an efficient and environmentally benign liquefied process for converting hemicellulose and waste lignocellulosic residues into furfural in a gamma-valerolactone/water solution using inexpensive Al-2(SO4)(3) as the catalyst. Due to the synergistic effect between the gamma-valeroctone (GVL) and active acid center which was derived from the metal salt, more than 50.2 mol% yield of furfural could be obtained from xylan, accompanying with 95.5 wt% of xylan conversion in GVL/H2O (m/m = 9:1, 40.0 g in total) at 140 degrees C for 3 h. A combination of Al-27 NMR spectroscopy and electrospray ionization tandem mass spectrometry (ESI-Q-TOF-MS/MS) revealed that the (Al(OH)(2)(aq)](+) species contributed to the isomerization and dehydration processes. In addition, the existence of an appropriate amount of water was believed to be responsible for promoting the destruction of hemicellulose and restrain the formation of humins. The liquefied system sheds light on its considerable potential for the industrial utilization of agriculture and forestry lignocellulosic residues.