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Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al2O3 catalyst
Abstract The effect of Zr on the catalytic performance of Pd/γ-Al2O3 for the methane combustion was investigated. The results show that the addition of Zr can improve the activity and stability of Pd/γ-Al2O3 catalyst, which, based on the catalyst characterization (N2 adsorption, XRD, CO-Chemisorption, XPS, CH4-TPR and O2-TPO), is ascribed to the interaction between Pd and Zr. The active phase of methane combustion over supported palladium catalyst is the Pd0/Pd2+ mixture. Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd0/Pd2+. H2 reduction could effectively reduce the oxidation degree of Pd species and regenerate the active sites (Pd0/Pd2+).
Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al2O3 catalyst
Abstract The effect of Zr on the catalytic performance of Pd/γ-Al2O3 for the methane combustion was investigated. The results show that the addition of Zr can improve the activity and stability of Pd/γ-Al2O3 catalyst, which, based on the catalyst characterization (N2 adsorption, XRD, CO-Chemisorption, XPS, CH4-TPR and O2-TPO), is ascribed to the interaction between Pd and Zr. The active phase of methane combustion over supported palladium catalyst is the Pd0/Pd2+ mixture. Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd0/Pd2+. H2 reduction could effectively reduce the oxidation degree of Pd species and regenerate the active sites (Pd0/Pd2+).
Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al2O3 catalyst
Na, Hongbo (Autor:in) / Zhu, Tianle (Autor:in) / Liu, Zhiming (Autor:in) / Sun, Yifei (Autor:in)
Frontiers of Environmental Science & Engineering ; 8 ; 659-665
06.12.2013
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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