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Transformation of Methane into Synthesis Gas Using the Redox Property of Pr-Zr Mixed Oxides: Effect of Calcination Temperature

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Abstract:

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°C 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°C show outstanding thermostability, and higher calcination temperatures result in phase segregation. Pr0.7Zr0.3O2-δ possesses high temperature stability(<900 °C) and the best appropriate calcination temperature is 800°C for methane gas-solid reaction.

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Info:

Periodical:

Advanced Materials Research (Volumes 724-725)

Pages:

1187-1191

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.724-725.1187

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Online since:

August 2013

Authors:

Yong Gang Wei*, Yun Peng Du, Kong Zhai Li, Xing Zhu, Hua Wang

Keywords:

Calcination Temperature, Methane Conversion, Pr-Zr Mixed Oxides, Synthesis Gas

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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