کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1260706 1496570 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of nanosized Ce1−xbixo2−δ solid solutions for catalytic applications
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis and characterization of nanosized Ce1−xbixo2−δ solid solutions for catalytic applications
چکیده انگلیسی

This study consists of elaborating and characterizing some nanometric materials in basic of rare-earth oxides by the soft chemistry technique. the first step of this work consists of synthesizing nanometric pure ceria by sol-gel process. In the second one, the Bismuth doped ceria by co-precipitation method was realized in order to obtain ceria-based solid solution, to improve its catalytic property by creation of oxygen vacancies. The solubility limit of Bi2O3 in CeO2 was determined to be around 20 atom %. The effect of thermal treatment temperatures on the average crystallite sizes and lattice parameters was done for pure ceria and Ce1−xBixO2−x/2 (x = 0.15 and 0.2). The different elaborated samples are subject of structural characterization (XRD). Catalytic reactivity of these materials in presence of “air- toxic gas” mixtures is studied by Fourier Transform Infra-Red Spectroscopy (FTIR).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Taibah University for Science - Volume 4, 2010, Pages 1–8
نویسندگان
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