NOx-assisted soot oxidation over K/CuCe catalyst
来源期刊：JOURNAL OF RARE EARTHS2010年第4期
论文作者：翁端 李佳 吴晓东 司知蠢
文章页码：542 - 546
摘 要：CeO2 and CuOx-CeO2 supported potassium catalysts were synthesized by wetness impregnation method. The catalysts were characterized by BET, NO-TPO, NOx-TPD and soot-TPO measurements. By the decoration of potassium and copper, the maximum soot combustion temperature of the ceria-based catalyst decreased to 338 and 379 °C in the presence and absence of NO under a loose contact mode, re- spectively. The pronouncedly enhanced NO oxidation ability by copper introduction and NOx storage capacity by potassium modification were especially important in the NOx-assisted soot oxidation reaction with the K/CuCe catalyst.
翁端，李佳，吴晓东，司知蠢
State Key Laboratory of New Ceramics & Fine Process, Department of Materials Science and Engineering, Tsinghua University
摘 要：CeO2 and CuOx-CeO2 supported potassium catalysts were synthesized by wetness impregnation method. The catalysts were characterized by BET, NO-TPO, NOx-TPD and soot-TPO measurements. By the decoration of potassium and copper, the maximum soot combustion temperature of the ceria-based catalyst decreased to 338 and 379 °C in the presence and absence of NO under a loose contact mode, re- spectively. The pronouncedly enhanced NO oxidation ability by copper introduction and NOx storage capacity by potassium modification were especially important in the NOx-assisted soot oxidation reaction with the K/CuCe catalyst.
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