College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China.
Bioresour Technol. 2013 Aug;142:579-84. doi: 10.1016/j.biortech.2013.05.091. Epub 2013 May 29.
Acidic ionic liquids (AILs) as a novel catalyst in biomass liquefaction can accord with the demand of green chemistry and enhance the development of biomass thermal chemical conversion. A series of AILs containing HSO4- were synthesized by the imidazolium cation functionalization and applied to the Chinese fir sawdust liquefaction in 1-octanol in this paper. The experimental results showed that the liquefaction rate was gradually improved with the AILs acidity increasing, and reached 71.5% when 1-(4-sulfobutyl)-3-methylmidazolium hydrosulfate was used as catalyst with the 6:1 mass ratio of 1-octanol to sawdust at 423K after 60 min. Lignin, hemicellulose and cellulose were orderly desquamated, and then depolymerized and liquefied with the catalyst acidity increasing in the sawdust liquefaction process. The light oil was mainly composed of the octyl ether and the octyl ester compounds, suggesting that the solvent may play an important role in producing the high octane rating biofuel.
酸性离子液体（AILs）作为一种新型催化剂在生物质液化中，可以符合绿色化学的需求，促进生物质热化学转化的发展。本文通过离子功能化合成了一系列含 HSO4-的 AILs，并将其应用于枞木屑在 1-辛醇中的液化。实验结果表明，随着 AILs 酸度的增加，液化率逐渐提高，当使用 1-(4-磺丁基)-3-甲基咪唑硫酸氢盐作为催化剂，在 423K 下，60min 后，1-辛醇与木屑的质量比为 6:1 时，液化率达到 71.5%。在木屑液化过程中，随着催化剂酸度的增加，木质素、半纤维素和纤维素依次剥落，然后解聚和液化。轻油主要由辛基醚和辛基酯化合物组成，这表明溶剂可能在生产高辛烷值生物燃料方面发挥了重要作用。
