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生物质化学工程

生物质化学工程 ›› 2007, Vol. 41 ›› Issue (4): 13-16.

• 研究报告 • 上一篇    下一篇

稻草酸水解制备乙酰丙酸的研究

刘凯, 方桂珍, 马艳丽, 赵应丽   

  1. 东北林业大学 生物质材料科学与技术教育部重点实验室, 黑龙江 哈尔滨 150040
  • 收稿日期:2007-02-05 修回日期:1900-01-01 出版日期:2007-07-30 发布日期:2007-07-30
  • 通讯作者: 方桂珍,教授,博士生导师,博士,从事木材化学方面的研究和教学工作;E-mail:Fanggz@public.hr.hl.cn。

Study on Preparation of Levulinic Acid by Acid Hydrolysis of Rice Straw

LIU Kai, FANG Gui-zhen, MA Yan-li, ZHAO Ying-li   

  1. Key Laboratory of Bio-based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
  • Received:2007-02-05 Revised:1900-01-01 Online:2007-07-30 Published:2007-07-30

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摘要： 以稻草为原料,高压酸水解法制备乙酰丙酸,采用气相色谱法测定水解液中乙酰丙酸的含量,考察了反应温度、反应时间、固液比和硫酸质量分数对乙酰丙酸得率的影响,通过单因素试验确定了最佳水解条件。结果表明,在高压 1.6 MPa 条件下,反应温度 170℃,反应时间 60 min,固液比1:10,硫酸的质量分数为 5% 时,所制得乙酰丙酸得率为 24.35%,此条件下水解残渣中纤维素和多戊糖均已完全反应。

关键词: 乙酰丙酸, 稻草, 酸水解

Abstract: Levulinic acid was prepared by the method of high-pressure acid hydrolysis of rice straw. The purity of levulinic acid was determined by gas chromatography. The influences of the reaction temperature, reaction time, solid-liquid ratio and acid concentration on the yield of levulinic acid were investigated. The single factor experimental results showed that when the temperature was 170℃, the solid- liquid ratio was 1:10 and the acid concentration was 5% by mass, the yield of levulinic acid was 24.35%. At this optimal hydrolysis condition, no cellulose or pentosan was detected in the hydrolyzed residue.

Key words: levulinic acid, rice straw, acid hydrolysis

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