Influence of the support on the state of nickel in the Ni/SiO2, Ni/ZrO2, and Ni/SO4/ZrO2 oxide systems studied by diffuse-reflectance IR spectroscopy

被引：0
|
作者：
A. V. Ivanov
L. M. Kustov
机构：
[1] Russian Academy of Sciences,N. D. Zelinsky Institute of Organic Chemistry
来源：
Russian Chemical Bulletin | 1998年 / 47卷
关键词：
nickel, silicon oxide, zirconium oxide, sulfate-promoted zirconium oxide, metal—support interaction; diffuse-reflectance IR spectroscopy;
D O I：
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学科分类号：
摘要：
The Ni/SiO2, Ni/ZrO2, and Ni/SO4/ZrO2 systems were studied by diffuse-reflectance IR spectroscopy using CO as a probe molecule. The Ni/SiO2 and Ni/ZrO2 systems are similar in properties, and the state of nickel in the Ni/ZrO2 system is determined by the specific surface area. In the Ni/SO4/ZrO2 system, the surface sulfur compounds affect substantially the state of nickel: Niδ+ species with a partial positive charge are formed due to the strong electron-acceptor properties of the sulfur compounds.
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页码：394 / 397
页数：3
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