Preparation of magnetic mesoporous core-shell nanocomposites for cinnamic acid hydrogenation

被引：12
|
作者：
Liu, Xiaofang [1 ]
Shi, Lingjuan [1 ]
Feng, Wenhui [1 ]
Niu, Libo [1 ]
Liu, Chen [1 ]
Bai, Guoyi [1 ]
机构：
[1] Hebei Univ, Key Lab Med Chem & Mol Diag, Minist Educ, Coll Chem & Environm Sci, Baoding 071002, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 83期
基金：
中国国家自然科学基金;
关键词：
AMORPHOUS ALLOY; SIO2; SHELL; MICROSPHERES; CATALYST; REMOVAL; MICROCYSTINS; ENRICHMENT; SEPARATION; STABILITY; PEPTIDES;
D O I：
10.1039/c4ra07176j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel magnetic mesoporous core-shell nanocomposite Fe3O4@nSiO(2)@mSiO(2)@Ni-Co-B was prepared by the combination of a modified Stober sol-gel process, a surfactant-templating method and self-assembly. It has a multi-shell structure with ferroferric oxide as core, dense nonporous silica and mesoporous silica as middle layers in sequence and an Ni-Co-B amorphous alloy as outer layer, as confirmed by transmission electron microscopy and nitrogen adsorption-desorption. This nanocomposite showed high activity and good selectivity in the selective hydrogenation of cinnamic acid to hydrocinnamic acid. Notably, it can be easily separated by a magnet after reaction due to its high magnetism and recycled effectively five times.
引用
收藏
页码：44302 / 44306
页数：5
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