TG study of the dispersion threshold of Mn2O3 on γ-Al2O3

被引：14
|
作者：
Liu, J [1 ]
Xu, H
Shen, W
Pan, X
Xiang, Y
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
[2] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1999年 / 58卷 / 02期
关键词：
dispersion threshold value; Mn2O3/gamma-Al2O3; catalyst; TG;
D O I：
10.1023/A:1010103218323
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Mn2O3/gamma-Al2O3 catalysts were prepared by the impregnation method, and the maximum monolayer dispersion capacity or dispersion threshold value of Mn2O3 on the surface of gamma-Al2O3 was determined to be 13.08% from the decomposition mass loss of supported Mn(NO3)(2) in the monolayer state. This was compared with the values estimated from a close-packed monolayer model and an interaction model. It was confirmed that the high activities and selectivities of the catalysts for benzoic acid hydrogenation to benzaldehyde are due to the monolayer dispersion of the Mn2O3 on the surface of gamma-Al2O3.
引用
收藏
页码：309 / 315
页数：7
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