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Hydrothermal Synthesis and Catalytic Activity of CeZrAl Oxide-Supported Pd for the Purification of Gasohol Exhaust

Author： Liu Jianying Zhao Ming Xu Chenghua Liu Shengyu Zhang Xueqiao Chen Yaoqiang

Publisher： Taylor & Francis Ltd

E-ISSN： 1553-3182|45|6|899-905

ISSN： 1553-3174

Source： Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, Vol.45, Iss.6, 2015-06, pp. : 899-905

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract

CeZrAl oxides (CZA) used as the support of Pd catalyst for purification of gasohol exhausts were synthesized by hydrothermal and coprecipitation method. CZA samples were characterized by N₂ adsorption–desorption, XRD, H₂–TPR, oxygen pulse adsorption, and XPS. The results show that the interactions between Pd and CZA with hydrothermal treatment lead to charge transfer from Pd species to Ce, which results in the presence of defect CeO_x and more lattice oxygen in the catalyst. Catalytic tests demonstrate that hydrothermal treatment of CZA decreases the light-off temperature of propane, carbon monoxide, and ethanol by 50, 15, and 59°C, respectively.

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