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研究了用耐碱菌种使碱法草浆黑液发酵 ,再以酸沉木质素 ,上清液浓缩至含糖1 0 0g L～ 1 1 0g L ,加入H2 SO4 达到 1 5g L后煮沸 30min ,30℃条件下以仲辛醇萃取乙酰丙酸 ,以水反萃取乙酰丙酸 ,再经浓缩、精馏、冷冻、结晶而得高纯乙酰丙酸
Abstract：Alkaline straw-pulp black liquor is leavened by alkaliproof bacterium.The lignin is precipitated by acidulation.The solution is concentrated into [C\-6H\- 12 O\-6]=100g/L-110g/L.Then [H\-2SO\-4]=15g/L is added,and boiled 30min.Then levulinic acid is extracted by 2-octanol at 30℃,counterextracted by water.The soltuion of levulinic acid is concentrated,rectified,crystallized by cold method.The pure levulinic acid is obtained.
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基本信息:
中图分类号:X793
引用信息:
[1]何柱生.从造纸黑液中提取乙酰丙酸的研究[J].化学工业与工程,2002(02):163-166.
2002-04-30
2002-04-30