Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al2O3 catalyst |
| |
| Authors: | Hongbo Na Tianle Zhu Zhiming Liu Yifei Sun |
| |
| Institution: | 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
|
| |
| 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+). |
| |
| Keywords: | Pd-Zr/Al2O3 methane catalytic combustion catalyst regeneration |
| 本文献已被 维普 SpringerLink 等数据库收录！ |
|
