کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1262671 971886 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A rationale for the development of thermally stable nanostructured CeO2-ZrO2-containing mixed oxides
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A rationale for the development of thermally stable nanostructured CeO2-ZrO2-containing mixed oxides
چکیده انگلیسی

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 solution. 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 26, Issue 2, April 2008, Pages 136-140