Amphiphilic Polyoxometalate-Paired Polymer Coated Fe3O4: Magnetically Recyclable Catalyst for Epoxidation of Bio-Derived Olefins with H2O2

被引：83

作者：

Leng, Yan ^{[1
]}

Zhao, Jiwei ^{[1
]}

Jiang, Pingping ^{[1
]}

Wang, Jun ^{[2
]}

机构：

[1] Jiangnan Univ, Sch Chem & Mat Engn, Minist Educ, Key Lab Food Colloids & Biotechnol, Wuxi 214122, Jiangsu, Peoples R China

[2] Nanjing Tech Univ, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 08期

基金：

中国国家自然科学基金;

关键词：

amphiphilic composite; polyoxometalate; heterogeneous catalysis; poly(ionic liquid); epoxidation; IONIC SOLID CATALYST; SELECTIVE EPOXIDATION; METHYL OLEATE; HETEROGENEOUS EPOXIDATION; METAL NANOPARTICLES; SOYBEAN OIL; ALKENES; LIQUIDS; PHASE; ACID;

D O I：

10.1021/am500987s

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An amphiphilic composite with magnetic Fe3O4 core and dodecylamine-modified polyoxometalate-paired poly(ionic liquid) shell was synthesized and characterized by H-1 NMR, thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, UV-vis spectroscopy, X-ray diffraction (XRD), and digital microscopy. Catalytic tests for H2O2-based epoxidation of bioderived olefins, along with comparisons to various counterparts, demonstrate well R 0 R that this newly designed catalyst exhibits high activity and selectivity, coupled with convenient magnetic recovery, and effective regeneration. The unique amphiphilic catalyst structure and the intramolecular charge transfer between amino groups and heteropolyanions are revealed to be responsible for the catalyst's excellent performances in epoxidation reactions.

引用

页码：5947 / 5954

页数：8

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