Chromia on silica and alumina catalysts: CO oxidation activity

被引:10
作者
Fouad, NE [1 ]
Knozinger, H
Zaki, MI
机构
[1] Minia Univ, Fac Sci, Dept Chem, El Minia 61519, Egypt
[2] Univ Munich, Inst Phys Chem, D-80333 Munich, Germany
[3] Kuwait Univ, Fac Sci, Dept Chem, Safat 13060, Kuwait
来源
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 1998年 / 203卷
关键词
chromia; CO oxidation; silica; alumina;
D O I
10.1524/zpch.1998.203.Part_1_2.131
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
alpha-Cr2O3 and chromia supported on silica and alumina catalysts containing 10 or 0.5 wt% Cr2O3 were prepared and characterized by XRD and UV-Vis diffuse reflectance spectroscopy. The behaviour of these materials in the catalytic oxidation of CO was measured. It is inferred that surface chromates that permit the formation of Cr6+/Cr3+ redox couples, are responsible for the catalytic activity.
引用
收藏
页码:131 / 142
页数:12
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