Bismuth-containing SBA-15 mesoporous silica catalysts for solvent-free liquid-phase oxidation of cyclohexane by molecular oxygen

被引：5

作者：

Wang, Huan-Ling ^{[1
]}

Li, Rong ^{[1
]}

Zheng, Yun-Feng ^{[1
]}

Chen, Hang-Ning ^{[1
]}

Jin, Jun ^{[1
]}

Wang, Fu-Shan ^{[1
]}

Ma, Jian-Tai ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

来源：

HELVETICA CHIMICA ACTA | 2007年 / 90卷 / 09期

关键词：

D O I：

10.1002/hlca.200790192

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bismuth (Bi)-containing SBA-15 mesoporous silica catalysts, Bi/SBA-15, with different Bi loadings were synthesized by a direct hydrothermal method. The materials were characterized in detail by various techniques. Powder-X-ray-diffraction (PXRD), N-2-adsorption/desorption, and transmission-electronmicroscopic (TEM) analyses revealed that the well-ordered hexagonal structure of SBA-15 is maintained after Bi incorporation. Diffuse-reflectance UV/VIS, Raman, and X-ray photoelectron spectroscopy (XPS) showed that the incorporated Bi-atoms are highly dispersed, most of them entering the internal surface of SBA-15. The new, very stable catalysts were found to be highly efficient for the oxidation of cyclohexane in a solvent-free system, molecular oxygen (02) being used as oxidant.

引用

页码：1837 / 1847

页数：11

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