林产化学与工业2016，Vol.36Issue(4)：1-6,6.DOI:10.3969/j.issn.0253-2417.2016.04.001
离子液体[ Hmim ][ CF3 SO3]在木质素及其模型化合物生物降解中的应用
Application of Ionic Liquid [ Hmim] [ CF3 SO3] in Biodegradation of Lignin & Lignin Model Compounds
摘要
Abstract
The ternary liquid-liquid equilibrium system composed of ionic liquid [ Hmim] [ CF3 SO3 ] which dissolved lignin with enzyme solution and the organic acid was investigated in present study. The enzymatic reactions in the system were also studied. The transformation from water-ionic two phase system to homogeneous system should be attributed to the function of carboxylic acid groups in small molecule organic acids. [ Hmim] [ CF3 SO3 ] with dissolved lignin could also compose the ternary system with water and organic acid. In the degradation reaction, formic acid played two roles in balancing the hydrophobic phase ( [ Hmim] [CF3SO3]with dissolved lignin), and aqueous phase (enzyme solution), and acting as radical stabilizer for lignin degrading enzymatic reaction. The degradation rates of alkali lignin and dehydrogenation polymers of lignin ( DHPs) were 56. 5% and 66. 5%, and the content of methoxyl group decreased by 46. 7% and 45. 3%, respectively. The generated phenolic compounds were 204. 7 and 207. 0 mg/L, and the formic acid consumption were 0. 57 and 0. 76 g, respectively. In the DHPs degradation process, the ternary equilibrium was disintegrated due to the excessive consumption of formic acid.关键词
三元液相体系/离子液体/木质素降解/酚Key words
ternary liquid-liquid system/ionic liquid/lignin degradation/phenols分类
化学化工引用本文复制引用
崔晶晶,李云华,陈秉辉..离子液体[ Hmim ][ CF3 SO3]在木质素及其模型化合物生物降解中的应用[J].林产化学与工业,2016,36(4):1-6,6.基金项目
国家973计划资助(2010CB732200) （2010CB732200）
