化工进展Issue(1)：242-246,5.DOI:10.3969/j.issn.1000-6613.2014.01.044
沙柳酸催化水解制备乙酰丙酸及分离提纯
Preparation of levulinic acid from hydrolysis of Salix psammophila catalyzed by acid and its separation and purification
摘要
Abstract
Preparation of levulinic acid from hydrolysis of Salix psammophila catalyzed by sulfuric acid as catalyst was studied in this paper. The effects of catalyst concentration,reaction time,reaction temperature,liquid-solid ratio on the yield of levulinic acid were investigated. By orthogonal tests,the optimum hydrolysis reaction conditions were as follows:reaction temperature 200℃,reaction time 90 min,catalyst concentration 9%,liquid-solid ratio(mL∶g) 15∶1,the highest yield of levulinic acid was 18.80%,the order of the factors was obtained according to the degree to which they could affect hydrolysis reaction as follows:reaction time > catalytic concentration > reaction temperature >liquid-solid ratio. 335 weak basic anion-exchange resin was used for separation and purification of hydrolysis mixed solution,under the static conditions of adsorption temperature 35 ℃,amount of resin 15 g,eluent concentration (HCl) 0.5 mol/L,recovery of levulinic acid was 95.35%.关键词
沙柳/乙酰丙酸/阴离子交换树脂/正交实验/分离提纯Key words
Salix psammophila/levulinic acid/anion-exchange resin/orthogonal tests/separation and purification分类
化学化工引用本文复制引用
高学艺,武彦伟,王克冰..沙柳酸催化水解制备乙酰丙酸及分离提纯[J].化工进展,2014,(1):242-246,5.基金项目
内蒙古自治区自然科学基金项目（2013MS0721）。 （）
