Preparation of a novel Fe3O4@SiO2@propyl@DBU magnetic core-shell nanocatalyst for Knoevenagel reaction in aqueous medium

被引：28
|
作者：
Zhang, Xiaoyu [1 ]
He, Xiaoyan [1 ]
Zhao, Sanhu [1 ,2 ]
机构：
[1] Shanxi Normal Univ, Sch Chem & Mat Sci, Linfen 041001, Shanxi, Peoples R China
[2] Xinzhou Teachers Univ, Dept Chem, Xinzhou 034000, Shanxi, Peoples R China
来源：
GREEN CHEMISTRY LETTERS AND REVIEWS | 2021年 / 14卷 / 01期
关键词：
Magnetic nano catalyst; recycle; DBU; Knoevenagel reaction;
D O I：
10.1080/17518253.2020.1862312
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Magnetic nano catalysts are widely used in various organic reactions due to their characteristics of magnetic separation and recycling. Magnetic Fe3O4@SiO2 nano catalyst modified by 1, 8-diazabicyclo [5.4.0]-7-undecene (DBU) was prepared and applied in the Knoevenagel reaction. The results showed that the catalyst has an excellent effect on the Knoevenagel reaction, which not only improves the reaction rate and yield, but also it can be easily separated from the reaction mixture driven by external magnetic force. Furthermore, the catalyst can be recycled 10 cycles with no loose of the catalytic activity.
引用
收藏
页码：83 / 96
页数：14
相关论文
共 50 条
  • [21] A multilevel core-shell structure Fe3O4@SiO2@InGaO@SiO2 magnetic particles for DNA extraction
    Liu, Shaoxiang
    Ning, Shuhua
    Zhang, Kun
    Wu, Yutong
    Feng, Shuanglong
    Lu, Wenqiang
    APPLIED SURFACE SCIENCE, 2024, 658
  • [22] Characterization of Fe3O4/SiO2 composite core-shell nanoparticles synthesized in isopropanol medium
    Shao, J. G.
    Xie, X. C.
    Xi, Y. J.
    Liu, X. N.
    Yang, Y. X.
    GLASS PHYSICS AND CHEMISTRY, 2013, 39 (03) : 329 - 335
  • [23] Characterization of Fe3O4/SiO2 composite core-shell nanoparticles synthesized in isopropanol medium
    J. G. Shao
    X. C. Xie
    Y. J. Xi
    X. N. Liu
    Y. X. Yang
    Glass Physics and Chemistry, 2013, 39 : 329 - 335
  • [24] Preparation and thermal stability of the spindle α-Fe2O3@SiO2 core-shell nanoparticles
    Zhang, Xin
    Niu, Yongan
    Li, Yang
    Li, Yao
    Zhao, Jiupeng
    JOURNAL OF SOLID STATE CHEMISTRY, 2014, 211 : 69 - 74
  • [25] Preparation of amino-functionalized Fe3O4@mSiO2 core-shell magnetic nanoparticles and their application for aqueous Fe3+ removal
    Cheng Meng
    Wang Zhikun
    Lv Qiang
    Li Chunling
    Sun Shuangqing
    Hu Songqing
    JOURNAL OF HAZARDOUS MATERIALS, 2018, 341 : 198 - 206
  • [26] Synthesis and Study of Aggregative Stability of Fe3O4@SiO2 Core-Shell Nanoparticles in Aqueous Solutions
    Zemtsova, E. G.
    Ponomareva, A. N.
    Galliulina, L. F.
    Zhukov, A. N.
    Smirnov, V. M.
    RUSSIAN JOURNAL OF GENERAL CHEMISTRY, 2017, 87 (10) : 2503 - 2504
  • [27] Synthesis and study of aggregative stability of Fe3O4@SiO2 core-shell nanoparticles in aqueous solutions
    E. G. Zemtsova
    A. N. Ponomareva
    L. F. Galliulina
    A. N. Zhukov
    V. M. Smirnov
    Russian Journal of General Chemistry, 2017, 87 : 2503 - 2504
  • [28] Preparation and Magnetic Manipulation of Fe3O4/Acrylic Resin Core-Shell Microspheres
    Zhou, Kejia
    Li, Junfu
    Li, Wangming
    Zhang, Yudong
    Wang, Kuangbing
    Xiong, Xinyi
    Li, Shijiao
    Chen, Xiaoyang
    Cheng, Hsien-wei
    Qiu, Jingjiang
    Wei, Ronghan
    LANGMUIR, 2023, 39 (32) : 11459 - 11467
  • [29] Core-shell Fe3O4@SiO2@PANI composite: Preparation, characterization, and applications in microwave absorption
    Ding, Juan
    Cheng, Ligang
    JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 881
  • [30] Preparation and characterization of core-shell structure Fe3O4@C magnetic nanoparticles
    Shi, Da
    Yang, Hao
    Ji, Shengfu
    Jiang, Sai
    Liu, Xuefei
    Zhang, Danni
    NEW PARADIGM OF PARTICLE SCIENCE AND TECHNOLOGY, PROCEEDINGS OF THE 7TH WORLD CONGRESS ON PARTICLE TECHNOLOGY, 2015, 102 : 1555 - 1562
12345