Determination of Ce valence in Rh-Ce/Al2
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D.D. Beck; T.W. Capehart; R.W. Hoffman
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Article
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1989
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Elsevier Science
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English
⚖ 664 KB
Measurements of the cerium L,,, absorption edges of Rh-Ce/Alz03 catalysts were made lo determine changes in the cerium valence produced by high temperature treatments in oxygen or hydrogen. The valences of cerium in the catalyst treated in oxygen at 900°C and CeO, are nearly identical. However, appr