应用化学 ›› 2019, Vol. 36 ›› Issue (2): 188-194.DOI: 10.11944/j.issn.1000-0518.2019.02.180089

• 研究论文 • 上一篇    下一篇

水溶性Fe3O4磁性纳米催化剂的合成及应用

陈红云a,杨方红a,李宇鹏a,何佳玉a,车梦琴a,王美晨b,程传杰a*()   

  1. a江西科技师范大学化学化工学院 南昌 330013
    b南昌大学信息工程学院 南昌 330031
  • 收稿日期:2018-03-29 出版日期:2019-02-01 发布日期:2019-01-31
  • 通讯作者: 程传杰
  • 基金资助:
    国家自然科学基金项目(21564004,21264008)

Synthesis and Application of Water-Soluble Fe3O4 Magnetic Nano-catalyst

CHEN Hongyuna,YANG Fanghonga,LI Yupenga,HE Jiayua,CHE Mengqina,WANG Meichenb,CHENG Chuanjiea*()   

  1. aSchool of Chemistry and Chemical Engineering,Jiangxi Science & Technology Normal University,Nanchang 330013,China;
    bSchool of Information Engineering,Nanchang University,Nanchang 330031,China
  • Received:2018-03-29 Published:2019-02-01 Online:2019-01-31
  • Contact: CHENG Chuanjie
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21564004, No.21264008)

摘要:

利用对氨基苯磺酸氟硼酸重氮盐与Fe3O4磁性纳米粒子(MNPs)的偶联反应,非常方便地制备出表面含有磺酸基的Fe3O4磁性纳米粒子。 透射电子显微镜(TEM) 测试结果表明,粒子的平均粒径在 20 nm左右。 溶解性实验表明,该纳米粒子具有较好的水溶性,但不溶于常用的有机溶剂,因此可利用其磁性回收并循环使用。 将该纳米粒子用于催化羧酸与醇的酯化反应,产物酯的收率为71%~86%。 催化剂在酯化反应中的最优使用量为1.5%(质量分数)。 同时,该催化剂可催化果糖合成5-羟甲基糠醛(HMF),收率为32%。

关键词: 磁性纳米粒子, 纳米Fe3O4, 纳米催化剂, 酯化, 水溶性

Abstract:

Fe3O4 magnetic nano particles(MNPs) with sulfonic acid groups on the surface were readily prepared via coupling reaction between 4-amino phenylsulfonic acid diazonium tetrafluoroborate and Fe3O4 nano particles. Transmission electron microscopy(TEM) images reveal that the average size of these acidic particles is about 20 nm. These acidic particles show good solubility in water, but they are insoluble in most of common organic solvents, allowing easy isolation and recycling of the particles by their magnetic property in catalytic reactions. In terms of application, when the acidic magnetic particles were used to catalyze esterification reactions between carboxylic acids and alcohols, moderate to high isolated yields(71%86%) of ester products were obtained. The optimized catalyst loading is 1.5%(mass fraction). Furthermore, 5-hydroxymethyl furfural(HMF) was also synthesized in a 32% yield from fructose utilizing the acidic magnetic particles as a catalyst.

Key words: magnetic nanoparticles, nano Fe3O4, nano catalyst, esterification, water-solubility