催化学报 ›› 2014, Vol. 35 ›› Issue (5): 703-708.DOI: 10.1016/S1872-2067(12)60739-6

• 研究论文 • 上一篇    下一篇

磺酸官能化的磁性核壳结构的纳米材料用于果糖脱水制备5-羟甲基糠醛

张晓辰a, 王敏a, 王业红a, 张超峰a,b, 张哲a,b, 王峰a, 徐杰a   

  1. a 中国科学院大连化学物理研究所, 辽宁大连116023;
    b 中国科学院大学, 北京100049
  • 收稿日期:2013-09-21 修回日期:2013-10-23 出版日期:2014-04-18 发布日期:2014-04-24
  • 通讯作者: 王峰,徐杰
  • 基金资助:

    国家自然科学基金(21073184,21273231,21233008);中国科学院“百人计划”.

Nanocoating of magnetic cores with sulfonic acid functionalized shells for the catalytic dehydration of fructose to 5-hydroxymethylfurfural

Xiaochen Zhanga, Min Wanga, Yehong Wanga, Chaofeng Zhanga,b, Zhe Zhanga,b, Feng Wanga, Jie Xua   

  1. a State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
    b Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-09-21 Revised:2013-10-23 Online:2014-04-18 Published:2014-04-24
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21073184, 21273231, and 21233008) and Hundred Talents Program of the Chinese Academy of Sciences.

摘要:

通过反相微乳液法制备了以Fe3O4为核,磺酸官能化的硅基材料为壳层的磁性酸性催化剂. 首先制备纳米Fe3O4磁核,然后涂层包覆苯基修饰的纳米级硅层,最后进行苯基磺化修饰,制得固体酸催化剂Fe3O4@Si/Ph-SO3H. 在果糖脱水制备5-羟甲基糠醛反应中,该催化剂表现出较好的催化活性,优于传统催化剂A-15,且与均相无机酸催化活性相当. 当采用二甲基亚砜作溶剂,在110 ℃下反应3 h,果糖转化率达到99%,5-羟甲基糠醛收率为82%. 另外,该催化剂经磁法回收后可多次重复使用.

关键词: 磁性粒子, 纳米催化剂, 果糖脱水, 5-羟甲基糠醛, 磺酸

Abstract:

A magnetically recyclable acid catalyst composed of an Fe3O4 core and sulfonic acid functionalized silica shell has been prepared using the reverse microemulsion method. The Fe3O4 core was coated with a phenyl modified silica shell nanolayer, and the phenyl groups were subsequently sulfonated to generate a solid sulfonic acid catalyst. The resulting acid catalyst showed higher activity than the conventional A-15 catalyst and comparable activity to several homogeneous sulfonic acid catalysts for the dehydration of fructose to 5-hydroxymethylfurfural (HMF). This process gave a fructose conversion of 99% with an HMF yield of 82% following 3 h in dimethylsulfoxide at 110 ℃. Furthermore, the catalyst could be magnetically separated and recycled several times without losing its activity.

Key words: Magnetic particle, Nanocatalyst, Fructose dehydration, 5-Hydroxymethylfurfural, Sulfonic acid