Abstract：The plasma effect of Cu0.05Ce0.95-CA catalyst on surface structure and species was characterized by TPO, H2-TPR, O2-TPD, XRD, BET and XPS. The results showed that the catalytic soot combustion activity is enhanced in plasma region. It displayed the best catalytic activity by 9kV voltage. The ignition temperature is 243.1℃ and the maximum oxidation temperature is 302.8℃, decreased by 65.1℃ and 92.7℃ by no plasma. Larger specific surface area and smaller crystallite size of Cu0.05Ce0.95-CA catalyst is emerged by plasma. With the help of plasma, the dispersion of CuO is increased. Meanwhile more Cu2+ enter into the lattice of CeO2 and more mixed oxides Cuy2+Ce1-y4+O2-y2-□y are formed on the surface of Cu0.05Ce0.95-CA catalyst . More reactive oxygen species were formed and its fluxion, movement and transmission can promote the growth of oxygen vacancies circularly, which can promote the catalytic soot combustion activity persistently.
欧阳杰宏, 林俊敏, 刘有发, 付名利, 黄碧纯, 吴军良, 陈礼敏, 叶代启. 用于碳烟燃烧的Cu0.05Ce0.95O催化剂活性氧物种的研究
——等离子体的强化效应
[J]. 中国环境科学, 2013, 33(2): 243-250.
欧Yang-Jie-Hong , LIN Jun-Min, LIU You-Fa, FU Ming-Li, HUANG Bi-Chun, WU Jun-Liang, CHEN Li-Min, YE Dai-Qi. Studies on the active oxygen species of Cu0.05Ce0.95O catalyst for soot combustion——promoting effect of plasma.. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(2): 243-250.
