JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

半纤维素在离子液体中的溶解和再生过程研究

郑勇 ,  彭聪虎 ,  郑永军 ,  侯绍刚

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郑勇, 彭聪虎, 郑永军, 等. 半纤维素在离子液体中的溶解和再生过程研究[J]. 轻工学报, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
引用本文: 郑勇, 彭聪虎, 郑永军, 等. 半纤维素在离子液体中的溶解和再生过程研究[J]. 轻工学报, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
shu
ZHENG Yong, PENG Cong-hu, ZHENG Yong-jun and et al. Research on the dissolution and regeneration of hemicellulose in ionic liquids[J]. Journal of Light Industry, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
Citation: ZHENG Yong, PENG Cong-hu, ZHENG Yong-jun and et al. Research on the dissolution and regeneration of hemicellulose in ionic liquids[J]. Journal of Light Industry, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
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半纤维素在离子液体中的溶解和再生过程研究

  • 安阳工学院化学与环境工程学院, 河南安阳 455000

  • 基金项目: 国家自然科学基金项目(21406002)
    安阳工学院博士启动基金项目(BQJ2014001)
    安阳市科技发展计划项目(2015035)

  • 中图分类号: O645.4;TQ35

Research on the dissolution and regeneration of hemicellulose in ionic liquids

  • Department of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China

  • Received Date: 2015-11-25
    Available Online: 2016-03-15

    CLC number: O645.4;TQ35

  • 摘要: 以6种典型的咪唑类离子液体为绿色溶剂,系统地测定了半纤维素的模拟化合物木聚糖在其中的溶解度.结果表明:氯盐型离子液体对木聚糖的溶解能力较强,在373.2 K时,木聚糖的溶解度最大可达12.09 g;当阴离子相同时,阳离子上含有羟乙基的离子液体对木聚糖的溶解能力最强,其次是阳离子上含有烯丙基和丁基的离子液体.采用红外光谱研究了木聚糖再生前后的组成和结构变化,从微观角度证明离子液体破坏了木聚糖中的氢键体系,使木聚糖分子中和分子间的氢键作用减弱,该过程是实现木聚糖溶解的主要原因.
    Abstract: Six typical imidazolium-based ionic liquids were prepared and used as green solvents in the dissolution of the model compound of hemicellulose xylan.The result showed that chloride salts had higher dissolving capacity of xylan.The solubility of xylan could be as high as 12.09 g at 373.2 K.When containing the same anions, the ionic liquids with hydroxyethyl groups had highest dissolving capacity, followed by the ones with allyl and butyl groups.Based on IR spectra measurements, the composition and structure change before and after regeneration of xylan were studied.It was confirmed from microcosmic angle that the hydrogen bonding network in xylan had been partly destroyed by ionic liquids.This process was the main reason why xylan could be dissolved in ionic liquids.
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  • 收稿日期:  2015-11-25
  • 刊出日期:  2016-03-15
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郑勇, 彭聪虎, 郑永军, 等. 半纤维素在离子液体中的溶解和再生过程研究[J]. 轻工学报, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
引用本文: 郑勇, 彭聪虎, 郑永军, 等. 半纤维素在离子液体中的溶解和再生过程研究[J]. 轻工学报, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
shu
ZHENG Yong, PENG Cong-hu, ZHENG Yong-jun and et al. Research on the dissolution and regeneration of hemicellulose in ionic liquids[J]. Journal of Light Industry, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
Citation: ZHENG Yong, PENG Cong-hu, ZHENG Yong-jun and et al. Research on the dissolution and regeneration of hemicellulose in ionic liquids[J]. Journal of Light Industry, 2016, 31(2): 15-20. doi: 10.3969/j.issn.2096-1553.2016.2.002
shu

半纤维素在离子液体中的溶解和再生过程研究

  • 安阳工学院化学与环境工程学院, 河南安阳 455000
  • 收稿日期: 2015-11-25
  • 网络出版日期: 2016-03-15
基金项目:  国家自然科学基金项目(21406002)安阳工学院博士启动基金项目(BQJ2014001)安阳市科技发展计划项目(2015035)

摘要: 以6种典型的咪唑类离子液体为绿色溶剂,系统地测定了半纤维素的模拟化合物木聚糖在其中的溶解度.结果表明:氯盐型离子液体对木聚糖的溶解能力较强,在373.2 K时,木聚糖的溶解度最大可达12.09 g;当阴离子相同时,阳离子上含有羟乙基的离子液体对木聚糖的溶解能力最强,其次是阳离子上含有烯丙基和丁基的离子液体.采用红外光谱研究了木聚糖再生前后的组成和结构变化,从微观角度证明离子液体破坏了木聚糖中的氢键体系,使木聚糖分子中和分子间的氢键作用减弱,该过程是实现木聚糖溶解的主要原因.

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