Novel protonated Fe-containing mesoporous silica nanoparticle catalyst: excellent performance cyclohexane oxidation

被引：32

作者：

Sazegar, Mohammad Reza ^{[1
]}

Dadvand, Aysan ^{[1
]}

Mahmoudi, Ali ^{[1
]}

机构：

[1] Islamic Azad Univ, North Tehran Branch, Dept Chem, Fac Sci, Tehran, Iran

来源：

RSC ADVANCES | 2017年 / 7卷 / 44期

关键词：

DINUCLEAR IRON(III) COMPLEXES; HYDROGEN-PEROXIDE; SELECTIVE OXIDATION; MOLECULAR-SIEVES; FE-MCM-41; MCM-41; ACID; IRON; DEGRADATION; EPOXIDATION;

D O I：

10.1039/c7ra02280h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A mesoporous silica structure (MSN) was synthesized using the sol-gel method, followed by iron incorporation and protonation which afforded Fe-MSN and H/Fe-MSN with Si/Fe ratios of 20. Nitrogen physisorption confirmed their mesoporous structures with pore diameters of 3.9 nm. Iron incorporation decreased the degree of catalyst crystallinity. Fe-MSN and H/Fe-MSN catalyzed the oxidation of cyclohexane to cyclohexanone using hydrogen peroxide at 298 K in 1 h. The significant advantages of these catalysts were high conversion, short reaction time, easy work-up, and compatibility with various organic and aqueous solvents. The cyclohexanone product was obtained with excellent conversions of 86 and 97% at 298 K using Fe-MSN and H/Fe-MSN, respectively. H/Fe-MSN catalyst gave a higher conversion than Fe-MSN. A comparative study of cyclohexane oxidation in the presence of H2O2 over H/Fe-MSN heterogeneous catalyst showed that H/Fe-MSN had excellent activity at low temperature.

引用

页码：27506 / 27514

页数：9

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