Selective hydrogenation of acetic acid to acetaldehyde over SBA-15 supported iron oxide catalysts

被引：0

作者：

Zhang, XZ ^{[1
]}

Yue, YH ^{[1
]}

Gao, Z ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2003年 / 24卷 / 01期

关键词：

iron oxide; SBA-15 molecular sieve; selective hydrogenation; acetic acid; acetaldehyde;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of SBA-15 supported alpha-Fe2O3 Catalysts were prepared and. characterized. The influence of iron oxide loading, reduction temperature and reaction temperature on the catalytic activity and selectivity for the selective hydrogenation of acetic acid to acetaldehyde was investigated. The highest yield of acetaldehyde over the supported catalysts is 42.7%, whereas that over non-supported alpha-Fe2O3 is only 32.2%. The hydrogenation catalysts need to be prereduced before reaction. The optinum reduction temperatures for alpha-Fe2O3 and the supported catalyst are 873 and 923 K, respectively. The selective hydrogenation to acetaldehyde is favored when Fe3O4 and Fe-0 coexist on the Catalyst surface, and acetaldehyde is likely formed via a Mars-van Krevelen reaction mechanism.

引用

页码：121 / 124

页数：4

共 13 条

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