A rationale for the development of thermally stable nanostructured CeO_2-ZrO_2-containing mixed oxides

查看全文 作　　者：Roberta Di [1]Monte;Jan Ka[1]par;Heather [2]Bradshaw;Colin [2]Norman

机构地区：[1]Department of Chemistry Sciences, Interuniversity Consortium INCA, University of Trieste, Via L.Giorgieri,34127 Trieste, Italy;[2]MEL Chemicals, P.O. Box 6, Clifton Junction, Swinton,Manchester M27 8LS, England

出　　处：《Journal of Rare Earths》索引2008年第26卷第2期,共5页

基　　金：PRIN 2006, 'Caratterizzazione spettroscopica e morfologica di Me-POSS eterogeneizzati', MEL Chemicals 摘　　要：CeO2-ZeO2 solid solutions are extensively used as oxygen storage promoters in the current automotive three-way catalysts. High thermal stability of the textural properties is one of the most important requirements for practical application since temperatures up to 1273 K are easily experienced by these materials under real working conditions. In the present paper, we investigated how hydrothermal treatments applied to cakes of doped and undoped ZrO2-rich CeO2-ZrO2 precursors might improve the thermal stability of the final CeO2-ZrO2 solid so- lution. A rationale was developed that allowed to correlate the morphology of the hydrothermally treated cake with the thermal stability at 1273 K of the final product, which did not depend on the composition of the mixed oxides. 关键词：CEO2-ZRO2 固体物质氧化物稀有元素

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A rationale for the development of thermally stable nanostructured CeO_2-ZrO_2-containing mixed oxides

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