化工进展

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秸秆的改性及吸油能力

李亚婧,孙晓锋,王广征,景占鑫,叶 青   

  1. 西北工业大学应用化学系,陕西 西安710072
  • 出版日期:2012-08-05 发布日期:2012-08-05

Modification of straw and its oil absorbency

LI Yajing,SUN Xiaofeng,WANG Guangzheng,JING Zhanxin,YE Qing   

  1. Department of Applied Chemistry,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,China
  • Online:2012-08-05 Published:2012-08-05

摘要: 处理海上溢油需要大量廉价的吸油材料。通过改性小麦秸秆,可以制得具有较高吸油性能的秸秆。考察了温度、时间、试剂、催化剂对秸秆改性的影响。结果表明,以乙酸酐(AA)作反应物,二甲基甲酰胺(DMF)为反应溶剂,4-二甲氨基吡啶(DMAP)作催化剂,反应时间2 h,反应温度100 ℃,秸秆的吸油率达到13.9 g/g,比改性前提高了54.4%,并利用红外光谱对改性前后的秸秆化学结构进行了分析。实验结果为这一工艺技术的工业化奠定了基础。

关键词: 秸秆, 酸酐, 改性, 吸油率

Abstract: The cheap oil-absorbing material is needed to deal with marine oil spill,and bioadsorbent with high oil-absorbing property can be prepared by modification of wheat straw. The effects of temperature,time,solvent,and catalyst on the modification of the straw were discussed. With AA as a reactant,DMF as a solvent,DMAP as a catalyst,reaction time of 2h and temperature of 100 ℃,the oil absorbency of the modified straw reached 13.9 g/g,54.4% more than that of crude straw. The chemical structures of crude and modified straw samples were analyzed by FT-IR. The study provides a foundation for further industrialization.

Key words: straw, anhydride, modification, oil absorbency

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