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鈰鋯鐠氧化物固溶體在三效催化劑中的應用
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TQ426.96

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煙臺師范學院自然科學基金（032913,042901）和山東省優(yōu)秀中青年科學家科研獎勵基金項目（2004BS0800）資助


The Use of Ceria-Zirconia-Praseodymium Oxide Solid Solution in Three-Way Catalyst
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    摘要:

    用共沉淀技術制備了Ce0.6Zr0.3Pr0.1O2固溶體，對其進行了XRD，F(xiàn)T-Raman光譜以及SEM表征，將其用于全鈀三效催化劑的制備。在實驗室模擬尾氣條件下，對所制備的催化劑進行了活性評價。結果表明：Ce0.66Zr0.3Pr0.1O2具有立方螢石結構，且具有較好的耐高溫性能。和Pd／CeO2催化劑相比，Pd／Ce0.6Zr0.3Pr0.1O2催化劑具有較寬的空燃比操作窗口和較低的起燃溫度。

    Abstract:

    Ce0.6Zr0.3Pr0.1O2 solid solution was prepared by co-precipitation technique and characterized by XRD, FT-Raman spectra, and SEM. Palladium-only three-way catalysts containing Ce0.6Zr0.3Pr0.1O2 as well as CeO2 was also prepared and evaluated under the condition of simulated exhaust in the lab. The results show that Ce0.6Zr0.3Pr0.1O2 has cubic fluorite solid solution structure that is stable at higher temperature. Compared with Pd/CeO2, Pd/Ce0.6Zr0.3Pr0.1O2 possesses wider air/fuel ratio operating window and lower light-off temperature.

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胡玉才.鈰鋯鐠氧化物固溶體在三效催化劑中的應用[J].稀有金屬材料與工程,2005,34(8):1299~1301.[Hu YuCai. The Use of Ceria-Zirconia-Praseodymium Oxide Solid Solution in Three-Way Catalyst[J]. Rare Metal Materials and Engineering,2005,34(8):1299~1301.]
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  • 收稿日期:2004-03-16
  • 最后修改日期:2005-04-19
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