Supported Pd/Ce0.5Zr0.5O2 catalyst prepared from colloidal palladium nanoparticles - 文章详情页

作者：

Wei, T. (Wei, T..) | Liu, L. (Liu, L..) | He, H. (He, H..) (学者：何洪) | Zi, X. (Zi, X..) | Dai, H. (Dai, H..)

收录：

Scopus PKU CSCD

摘要：

The　colloidal　Pd　nanoparticles　were　synthesized　by　ultra-assistant　membrane　diffusion　reaction　(UAMR)　firstly,　and　then　three　different　methods　were　adopted　to　prepare　a　series　of　Pd/Ce0.5Zr0.5O2　nanocatalyst　from　the　prepared　Pd　nanoparticles.　The　morphology　of　precursor　Pd　nanoparticles　was　studied　by　means　of　transmission　electron　microscopy　(TEM),　and　the　catalysts　were　characterized　by　a　combination　of　N2　adsorption/desorption,　X-ray　diffraction　(XRD),　temperature-programmed　reduction　by　H2　(H2-TPR)　and　inductively　coupled　plasma-atom　emission　spectrometer　(ICP-AES).　The　catalytic　behavior　of　the　Pd/Ce0.5Zr0.5O2　samples　in　the　CO　oxidation　reaction　was　investigated.　It　was　found　that　the　catalyst　prepared　by　synthesizing　Pd　nanopartcles　and　then　supported　on　prepared　support　Ce0.5Zr0.5O2　exhibited　the　lowest　metal　loading,　the　best　catalytic　activity　for　CO　oxidation,　and　a　complete　conversion　of　CO　to　CO2　could　be　achieved　at　150°C.　The　higher　metal　dispersion　and　the　Pd　species　with　a　low　reduction　temperature　might　account　for　the　high　activity.

关键词：

CO oxidation; Nanocatalyst; Pd sol; Rare earths

作者机构：

[ 1 ] [Wei, T.]Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Liu, L.]Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [He, H.]Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Zi, X.]Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Dai, H.]Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

何洪
[He, H.]Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

hehong@bjut.edu.cn

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