Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al

2014年第8卷第5期

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《环境科学与工程前沿（英文）》 >> 2014年第8卷第5期 doi: 10.1007/s11783-013-0613-1

Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al

1. School of Chemistry and Environment, Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beihang University, Beijing 100191, China.2. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

发布日期： 2014-06-20

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摘要

The effect of Zr on the catalytic performance of Pd/γ-Al O for the methane combustion was investigated. The results show that the addition of Zr can improve the activity and stability of Pd/γ-Al O catalyst, which, based on the catalyst characterization (N adsorption, XRD, CO-Chemisorption, XPS, CH -TPR and O -TPO), is ascribed to the interaction between Pd and Zr. The active phase of methane combustion over supported palladium catalyst is the Pd /Pd mixture. Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd / Pd . H reduction could effectively reduce the oxidation degree of Pd species and regenerate the active sites (Pd / Pd ).

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Pd-Zr/Al₂O₃ ; methane ; catalytic combustion ; catalyst regeneration