Preferential CO oxidation over supported Pt catalysts

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• 作者：Kyung-Won Jeon ; Dae-Woon Jeong ; Won-Jun Jang…
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：33
• 期：6
• 页码：1781-1787
• 全文大小：325 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220
• 卷排序：33

文摘

Preferential CO oxidation reaction has been carried out at a gas hourly space velocity of 46,129 h−1 over supported Pt catalysts prepared by an incipient wetness impregnation method. Al2O3, MgO-Al₂O₃ (MgO=30 wt% and 70 wt%) and MgO were employed as supports for the target reaction. 1 wt% Pt/Al₂O₃ catalyst exhibited very high performance (X_CO>90% at 175 °C for 100 h) in the reformate gases containing CO₂ under severe conditions. This result is mainly due to the highest Pt dispersion, easier reducibility of PtO_x, and easier electron transfer of metallic Pt. In addition, 1 wt% Pt/Al₂O₃ catalyst was also tested in the reformate gases with both CO₂ and H₂O to evaluate under realistic condition.KeywordsPreferential CO OxidationPt/Al₂O₃DispersionReducibilityElectron Transfer