Influence of Supports on Catalytic Performance and Carbon Deposition of Palladium Catalyst for Methane Partial Oxidation
来源期刊：JOURNAL OF RARE EARTHS2007年第3期
论文作者：Weng Duan Shi Fangli Shen Meiqing Fei Yanan Wang Jun
Key words：CeO2-ZrO2; α-Al2O3; carbon deposition; methane; partial oxidation; rare earths;
Abstract: The catalytic performance of methane partial oxidation was investigated on Pd/CeO2-ZrO2 and Pd/α-Al2O3 catalysts. The catalysts were characterized by XRD, Raman spectra, and TG-DTA techniques. The results show that CeO2-ZrO2 support is more advantageous for the catalytic activity and stability of catalysts compared to α-Al2O3. TG-DTA and Raman spectra results indicated that carbon deposited on the catalysts was in the form of graphite, which is the main reason for the deactivation of catalysts after a 24-hour reaction. Moreover, CeO2-ZrO2 had positive effect on inhibiting carbon deposition.
Weng Duan1，Shi Fangli2，Shen Meiqing2，Fei Yanan2，Wang Jun2
(1.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
2.Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering & Technology,Tianjin University,Tianjin 300072,China)
Abstract:The catalytic performance of methane partial oxidation was investigated on Pd/CeO2-ZrO2 and Pd/α-Al2O3 catalysts. The catalysts were characterized by XRD, Raman spectra, and TG-DTA techniques. The results show that CeO2-ZrO2 support is more advantageous for the catalytic activity and stability of catalysts compared to α-Al2O3. TG-DTA and Raman spectra results indicated that carbon deposited on the catalysts was in the form of graphite, which is the main reason for the deactivation of catalysts after a 24-hour reaction. Moreover, CeO2-ZrO2 had positive effect on inhibiting carbon deposition.
Key words:CeO2-ZrO2; α-Al2O3; carbon deposition; methane; partial oxidation; rare earths;
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