Structure dependent catalytic activity of Ce_(0.8)Tb_(0.2)O_(2-δ) and TiO2 supported Ce_(0.8)Tb_(0.2)O_(2-δ) solid solutions for CO oxidation

Damma Devaiah; Deshetti Jampaiah; Pranjal Saikia

首页> 外文期刊>Journal of industrial and engineering chemistry >Structure dependent catalytic activity of Ce_(0.8)Tb_(0.2)O_(2-δ) and TiO2 supported Ce_(0.8)Tb_(0.2)O_(2-δ) solid solutions for CO oxidation

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Structure dependent catalytic activity of Ce_(0.8)Tb_(0.2)O_(2-δ) and TiO2 supported Ce_(0.8)Tb_(0.2)O_(2-δ) solid solutions for CO oxidation

机译：Ce_（0.8）Tb_（0.2）O_（2-δ）和TiO2负载的Ce_（0.8）Tb_（0.2）O_（2-δ）固溶体对CO氧化的结构依赖性催化活性

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A facile cpprecipitation and deposition precipitation method were used for synthesis of nanosized Ce_(0.8)Tb_(0.2)O_(2-δ) (CT) and Ce_(0.8)Tb_(0.2)O_(2-δ)/TiO2 (CTT) solid solutions, respectively. The synthesized materials were characterized by various state-of-the-art techniques and evaluated for CO oxidation activity. Formation of CT solid solution was confirmed by XRD and Raman, and nanocrystalline nature by TEM. Characterization results further suggested formation of a new pyrochlore phase between TiO2 and TbO2 at 1073 K, and the presence of Ce~(3+) associated with lattice defects in all samples. Catalytic results showed that CT calcined at 773 K exhibits a high activity and correlates well with physicochemical characteristics.

机译：简便的沉淀法和沉积沉淀法用于合成纳米Ce_（0.8）Tb_（0.2）O_（2-δ）（CT）和Ce_（0.8）Tb_（0.2）O_（2-δ）/ TiO2（CTT）固溶体。合成的材料通过各种最新技术进行表征，并评估了CO的氧化活性。 X射线衍射和拉曼光谱证实了CT固溶体的形成，而透射电镜证实了纳米晶的性质。表征结果进一步表明，在所有样品中，TiO2和TbO2之间在1073 K处形成了新的烧绿石相，并且存在与晶格缺陷相关的Ce〜（3+）。催化结果表明，在773 K下煅烧的CT表现出较高的活性，并与理化特性密切相关。

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《Journal of industrial and engineering chemistry》 |2014年第2期|共10页
作者
Damma Devaiah; Deshetti Jampaiah; Pranjal Saikia;
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正文语种 eng
中图分类化学工业;
关键词
Ceria-terbia; Solid solution; Characterization; CO oxidation; Lattice defects; Structure-activity relationship;

机译：二氧化铈;固溶体;表征;CO氧化;晶格缺陷;构效关系;

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1. Structure dependent catalytic activity of Ce_(0.8)Tb_(0.2)O_(2-δ) and TiO2 supported Ce_(0.8)Tb_(0.2)O_(2-δ) solid solutions for CO oxidation [J] . Damma Devaiah, Deshetti Jampaiah, Pranjal Saikia Journal of industrial and engineering chemistry . 2014,第2期

机译：Ce_（0.8）Tb_（0.2）O_（2-δ）和TiO2负载的Ce_（0.8）Tb_（0.2）O_（2-δ）固溶体对CO氧化的结构依赖性催化活性
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6. Defect Chemistry and Thermomechanical Properties of $Ce_{0.8}Pr_{x}Tb_{0.2-x}O_{2-\delta}$ [O] . Chatzichristodoulou, C., Hendriksen, P. V., Hagen, A. 2010

机译：$ Ce_ {0.8} Pr_ {x} Tb_ {0.2-x} O_ {2- \ delta} $的缺陷化学和热机械性质

Structure dependent catalytic activity of Ce_(0.8)Tb_(0.2)O_(2-δ) and TiO2 supported Ce_(0.8)Tb_(0.2)O_(2-δ) solid solutions for CO oxidation

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