| 纳米晶PbTiO3负载CuO催化NO分解 | |
| Catalytic Decomposition of Nitric Oxide over Nano-sized PbTiO3 Supported Cupric Oxide | |
| 摘要: | |
| 关键词: NO分解 纳米钛酸铅 氧化铜 | |
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| Abstract: A large specific surface area perovskite-type mixed oxide PbTiO3 supported cupric oxide was synthesized as a catalyst for NO decomposition and characterized by techniques such as XPS, XRD, H2-TPR before and after NO decomposition reactions. The catalytic properties were tested with a fix-bed micro-reactor. The results showed that the PbTiO3 was inactive for the reactions, but 1wt % Cu/PbTiO3 catalyst gave fairly good activities for NO decomposition at temperature as low as 473 K. Copper species were found well-dispersed but weakly interacted with the support before NO decomposition, and the NO decomposition caused significant change in the environment of the copper species, which became Cu(Ⅰ) and most probably incorporated into surface crystal lattice of the nano-sized PbTiO3. In NO reaction, a large amount of oxygen atoms from the decomposition of NO penetrated into the nano-sized PbTiO3 support and caused small expansion of crystal lattice. The transport of oxygen between the copper species and the catalyst support may be helpful to speed up the kinetic regeneration of active metal sites from oxygen occupancy and resulted in good catalytic performance. | |
| Keywords: NO decomposition nano perovskite copper oxide | |
| 投稿时间：2004-09-20 修订日期：2005-02-23 | |
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| 邢丽,薛念华,陈向科,郭学锋,丁维平,陈懿.纳米晶PbTiO3负载CuO催化NO分解[J].无机化学学报,2005,21(5):729-732. | |
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