A magnetically recyclable heterogeneous catalyst: Cobalt nano-oxide supported on hydroxyapatite-encapsulated γ-Fe2O3 nanocrystallites for highly efficient olefin oxidation with H2O2

被引：65

作者：

Zhang, Yan ^{[1
,2
]}

Li, Zhen ^{[1
]}

Sun, Wei ^{[1
]}

Xia, Chungu ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxosynth & Select Oxidat, Lanzhou 73000, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 10卷 / 02期

关键词：

Hydroxyapatite; Supported cobalt catalyst; H2O2; Oxidation; Cooperation effect;

D O I：

10.1016/j.catcom.2008.08.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

High catalytic activity of cobalt nano-oxide supported on hydroxyapatite-encapsulated magnetic gamma-Fe2O3 nanocrystallites had been prepared. HR-TEM characterization demonstrated the formation of gamma-Fe2O3 nanocrystallites within the HAP matrix with a mean diameter of 1-3 nm. The mixed Co3O4 and CoFe2O4 oxides were existed on the surface of CoHAP-gamma-Fe2O3. The CoHAP-gamma-Fe2O3 exhibited good catalytic activity for the oxidation of various alkenes based on a cooperation effect between these two oxides. The magnetic properties of the CoHAP-gamma-Fe2O3 provided a convenient route for separation of the catalyst from the reaction mixture by application of an external permanent magnet. The spent catalyst could be recycled without appreciable loss of catalytic activity. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：237 / 242

页数：6

共 27 条

[1] Metal supported on dendronized magnetic nanoparticles: Highly selective hydroformylation catalysts [J].