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La2Cu1-xFexO4催化去除柴油机NOx和PM排放台架试验

DOI: 10.6041/j.issn.1000-1298.2012.09.003, PP. 11-15

Keywords: 柴油机,类钙钛矿,催化剂,活性,排放,台架试验

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Abstract:

为采取后处理技术同时去除柴油机的NOx和PM排放,采用溶胶凝胶法制备了La2Cu1-xFexO4系列催化剂,运用XRD、NO—TPD及H2—TPR对样品进行表征,并对催化剂进行模拟活性评价,结果表明La2Cu07Fe03O4具有同时去除PM—NO的反应活性。将La2Cu07Fe03O4制备成催化器进行发动机稳态工况的台架试验,并采取后喷的燃油喷射方式,表明制备的催化剂在发动机高速高负荷工况时能去除NOx和氧化再生PM,当主喷与后喷间隔角为70°CA时后喷燃油能生成大量具有还原性的HC,提高了对NOx的转化率。

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