碳基固体酸催化D-木糖选择性转化合成糠醛的研究
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TQ426

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Efficient Conversion of D-xylose to Furfural Promoted by Carbon-based Solid Acid Catalysts
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    采用固体酸催化D-木糖脱水制备糠醛具有经济价值高、易分离和环境友好等优点;本文中,主要研究了碳基固体酸在木糖脱水中的催化性能,所用的固体酸包括木质素磺酸聚合物催化剂(LF-A, LF-B, LF-C, LF-D)和磺化碳材料FS等;其中,木质素磺酸聚合物催化剂是借助酚醛缩合过程将木质素磺酸盐和醛类反应制得;磺化碳材料则是采用水热合成法以糠醛、十二烷基苯磺酸钠为原料制备;通过对催化剂种类、反应媒介、时间、催化剂用量及反应温度等条件的详细研究,发现LF-A催化剂的效果较好,当原料D-木糖为1.0 g,反应温度为170 ºC,反应时间4 h,催化剂用量为0.08 g,溶剂为γ-丁内酯时,糠醛的收率可达72.9%;同时,对固体酸催化剂进行XRD,FT-IR,TG-DTG,SEM和TEM等表征,并找出了催化剂结构与活性之间的相互关系.

    Abstract:

    The synthesis of furfural via solid acid-catalyzed dehydration of D-xylose is considered to be highly economic, easy separation and environment-friendly. In this work, the catalytic performances of different carbon- based solid acids have been investigated on the dehydration of D-xylose in detail. The used carbon-based solid acids include polymeric lignosulfonate materials (LF-A, LF-B, LF-C, LF-D) and sulfonated carbons (FS), in which the polymeric lignosulfonate material was obtained through phenol-formaldehyde condensation reaction of lignonsulfonate with aldehyde, and sulfonated carbon was prepared using the hydro-thermal synthesis method with furfural and sodium dodecyl benzene sulfonate (SDBS) as the raw materials. The influences of various catalysts, reaction media, reaction time, dosage of catalyst and temperature on the D-xylose dehydration were investigated, respectively. As a result, it was found that catalytic activity of LF-A is higher than those of other catalysts where more than 72.9% yield of furfural was obtained for 4 h at 170 oC in γ-butyrolactone solvent. Moreover, these catalytic materials are detected with XRD, FT-IR, TG-DTG, SEM and TEM techniques, and the relationship between the structures and their activities has been also discussed.

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仝新利,谢伟,庄绪丽,赵青,李彩文,张阳阳.碳基固体酸催化D-木糖选择性转化合成糠醛的研究[J].精细化工,2018,35(5):

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  • 收稿日期:2017-06-29
  • 最后修改日期:2017-10-11
  • 录用日期:2017-10-16
  • 在线发布日期: 2021-11-19
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