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中国科学院大学学报 ›› 2013, Vol. 30 ›› Issue (2): 194-199.DOI: 10.7523/j.issn.1002-1175.2013.02.008

• 化学与生命科学 • 上一篇    下一篇

玉米秸秆在两种咪唑类离子液体中的溶解与再生

李姗1, 李增喜1,2, 朱敏莉1, 吕兴梅2   

  1. 1. 中国科学院研究生院, 北京 100049;
    2. 中国科学院过程工程研究所, 北京 100190
  • 收稿日期:2012-01-11 修回日期:2012-03-31 发布日期:2013-03-15
  • 通讯作者: 吕兴梅
  • 基金资助:

    国家自然科学基金面上项目(20976174)资助

Cornstalk dissolution and regeneration in two imidazolium-based ionic liquids

LI Shan1, LI Zeng-Xi1,2, ZHU Min-Li1, LV Xing-Mei2   

  1. 1. Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
    2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2012-01-11 Revised:2012-03-31 Published:2013-03-15

摘要:

研究1-丁基-3-甲基咪唑氯盐(BmimCl)和1-乙基-3-甲基咪唑乙酸盐(EmimOAc)两种咪唑类离子液体在不同条件下对玉米秸秆的溶解和再生情况.采用傅里叶变换红外光谱(IR)、X-射线粉末衍射(XRD)、扫描电镜(SEM)热重分析(TGA)手段分析溶解前后秸秆的化学结构与结晶结构.结果表明,秸秆纤维素溶解再生后结晶度变低,热稳定性也略有降低;离子液体是秸秆的直接溶剂,秸秆在其中并未发生衍生化反应.

关键词: 秸秆, 离子液体, 溶解, 再生

Abstract:

Dissolution of cornstalk in 1-butyl-3-methylimidazolium chloride (BmimCl) and 1-ethyl-3-methylimidazolium acetate (EmimOAc) was studied. Chemical structure and crystalline form of cornstalk before and after dissolution were analyzed by means of FT-IR, TGA, SEM, and XRD. The results show that the crystallinity and thermostability of the regenerated cellulose-rich material slightly decreased after dissolution. Cornstalk directly dissolved in ionic liquids, and no derivatization reaction occurred.

Key words: cornstalk, ionic liquid, dissolution, regeneration

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