Transformation of Methane into Synthesis Gas Using the Redox Property of Pr-Zr Mixed Oxides: Effect of Calcination Temperature
- Resource Type
- Article
- Authors
- Wei, Yong Gang; Du, Yun Peng; Li, Kong Zhai; Zhu, Xing; Wang, Hua
- Source
- Advanced Materials Research; August 2013, Vol. 724 Issue: 1 p1187-1191, 5p
- Subject
- Language
- ISSN
- 10226680
Pr-Zr mixed oxides prepared by co-precipitation were used as oxygen carriers for converting methane into synthesis gas through gas-solid reactions. The structural evolution and reducibility of Pr-Zr oxygen carriers with calcination temperatures from 600 to 1200℃ were investigated by XRD and TPR techniques and correlated to their activity for methane selective oxidation. The Pr-Zr mixed oxides calcined at 600-800℃ show outstanding thermostability, and higher calcination temperatures result in phase segregation. Pr0.7Zr0.3O2-δ possesses high temperature stability(<900 ℃) and the best appropriate calcination temperature is 800℃ for methane gas-solid reaction.