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乙二醇醇解松木屑反应特征及机理分析

房添祥 侯沛东 蒋兴家 杨建丽

房添祥, 侯沛东, 蒋兴家, 杨建丽. 乙二醇醇解松木屑反应特征及机理分析[J]. 燃料化学学报(中英文), 2014, 42(12): 1431-1439.
引用本文: 房添祥, 侯沛东, 蒋兴家, 杨建丽. 乙二醇醇解松木屑反应特征及机理分析[J]. 燃料化学学报(中英文), 2014, 42(12): 1431-1439.
FANG Tian-xiang, HOU Pei-dong, JIANG Xing-jia, YANG Jian-li. Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1431-1439.
Citation: FANG Tian-xiang, HOU Pei-dong, JIANG Xing-jia, YANG Jian-li. Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism[J]. Journal of Fuel Chemistry and Technology, 2014, 42(12): 1431-1439.

乙二醇醇解松木屑反应特征及机理分析

基金项目: 国家自然科学青年基金(21206186)。
详细信息
    通讯作者:

    房添祥(1988-), 男, 山东莒县人, 硕士, 从事生物质能源化工研究, Tel: 18500033782; E-mai: fation@163.com。

  • 中图分类号: TK6

Study on alcoholysis of pine sawdust in ethylene glycol and alcoholysis mechanism

  • 摘要: 利用酸化的乙二醇作溶剂对松木屑进行醇解,探讨了温度和时间对醇解转化率的影响。利用热重分析、红外光谱分析、扫描电镜及X射线衍射考察了醇解残渣的性质。分别利用傅里叶变换红外光谱及色质联用分析了正己烷不溶物和可溶物中组分的分布及特征。结果表明,松木屑转化率在90 min、160 ℃达到最大值95.3%。松木屑中纤维素无定形区的组分和木质素发生了解离,醇解残渣的表面结构被破坏;正己烷不溶物是含有羟基、甲氧基及醚键等含氧官能团的化合物;正己烷可溶物主要由苯二甲酸酯、硬脂酸甲酯、2-甲基己酸丙酯、2-甲基丙酸、聚乙二醇及未反应的乙二醇组成。乙二醇与松木屑解离的羧酸发生酯化反应,对液相产物具有稳定作用,促进了松木屑的醇解反应;醇解过程中乙二醇自缩聚生成聚乙二醇,增大了乙二醇的消耗。
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出版历程
  • 收稿日期:  2014-04-08
  • 修回日期:  2014-05-30
  • 刊出日期:  2014-12-30

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