X-Ray Photoelectron Spectroscopic Studies of Catalysts — Supported Cobalt Catalysts —
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概要
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XPS techniques were used to clarify the state of supported cobalt catalysts. In order to characterize Co<SUP>2+</SUP> and Co<SUP>3+</SUP>, the spin-orbit splitting of the 2p level, which is considered to be affected by the exchange interaction between the unpaired 3d electrons and 2p electrons, was found to be very useful. The interaction between catalyst and support was investigated. The state of supported cobalt was determined: Co<SUB>2</SUB>O<SUB>3</SUB> on SiO<SUB>2</SUB>, Co<SUB>2</SUB>O<SUB>3</SUB>+ CoAl<SUB>2</SUB>O<SUB>4</SUB> on γ-Al<SUB>2</SUB>O<SUB>3</SUB>, and LaCoO<SUB>3</SUB> on La<SUB>2</SUB>O<SUB>3</SUB>. The order of the strength of the chemical interaction between cobalt and support is as follows:<BR>La_2O_3>γ-Al_2O_3>SiO_2. <BR>This fact was also confirmed by reduction experiments.
- 公益社団法人 日本化学会の論文
著者
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Imanaka Toshinobu
Department Of Chemical Engineering Faculty Of Engineering Science Osaka University
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Okamoto Yasuaki
Department Of Applied Chemistry Tokyo University Of Science Yamaguchi
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Nakano Hajime
Department Of Cardiovascular Medicine Ohmori Hospital Toho University School Of Medicine
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Teranishi Shiichiro
Department of Chemical Engineering, Faculty of Engineeing Science, Osaka University
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Nakano Hajime
Department of Chemical Engineering, Faculty of Engineering Science, Osaka University
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