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林产化学与工业 ›› 2015, Vol. 35 ›› Issue (2): 67-72.doi: 10.3969/j.issn.0253-2417.2015.02.010

• 研究报告 • 上一篇    下一篇

木质素在异丙醇中的降解研究

田晓东, 叶跃元, 刘运权   

  1. 厦门大学 能源学院, 福建 厦门 361102
  • 收稿日期:2014-03-04 出版日期:2015-04-25 发布日期:2015-04-24
  • 通讯作者: 刘运权(1963-),男,教授,博士,主要从事生物质高效转化利用研究;E-mail:yq_liu@xmu.edu.cn。 E-mail:yq_liu@xmu.edu.cn
  • 作者简介:田晓东(1989-),男,宁夏中卫人,硕士生,主要从事木质素的解聚与转化研究
  • 基金资助:
    国家973计划资助(2012CB215306)

Depolymerization of Lignin in Isopropanol Solvent

TIAN Xiao-dong, YE Yue-yuan, LIU Yun-quan   

  1. College of Energy, Xiamen University, Xiamen 361102, China
  • Received:2014-03-04 Online:2015-04-25 Published:2015-04-24

摘要: 采用正交试验法对有机溶剂木质素在异丙醇中的降解进行了研究,得出木质素在异丙醇中降解的较优水平为:催化剂Ru/C用量0.20 g、温度280 ℃、压力2.5 MPa、时间8 h。在该条件下,降解产物中生物油的产率最高可达74.13%,生物油中酚类和醇、酮以及烃类的GC含量总和接近60%。木质素原料和生物油的元素分析说明解聚过程中发生了脱氧;傅里叶红外光谱分析表明木质素的解聚过程中有酚羟基、烷基等新的结构基团产生。

关键词: 木质素, 异丙醇, 正交试验, 降解

Abstract: The depolymerization of lignin in isopropanol was studied by orthogonal array test. It was found that the excellent levels of the lignin depolymerization in isopropanol were as follows: Ru/C catalyst amount 0.20 g, temperature 280 ℃, pressure 2.5 MPa, reaction time 8 h. Under these conditions, the yield of bio-oil could reach 74.13%, and a combined GC content of phenolics, cyclic alcohols, cyclic ketones, and hydrocarbons achieved 60%. The elemental analyses of lignin feedstock and bio-oil products indicated that deoxygenation was carried out during the depolymerization. The fourier infrared spectrum (FT-IR) further indicated that new functional groups such as phenolic hydroxyl and alkyl were formed.

Key words: lignin, isopropanol, orthogonal test, depolymerization

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