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首页> 外文期刊>Australian Journal of Chemistry: A Journal for the Publication of Original Research in All Branches of Chemistry >The Effects of SiO2 and CeO2 Addition on the Performances of MnOx/TiO2 Catalysts
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The Effects of SiO2 and CeO2 Addition on the Performances of MnOx/TiO2 Catalysts

机译：SiO2和CeO2的加入对MnOx / TiO2催化剂性能的影响。

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摘要

A TiO2-SiO2 mixed oxide was obtained by a co-precipitation method. MnOx-CeO2/TiO2-SiO2 were prepared by an impregnation method and their activity towards the selective catalytic reduction of NO with NH3 at low temperature were evaluated. Compared with pure TiO2, TiO2-SiO2 exhibited an evidently larger surface area and pore volume, and a smaller average pore diameter with narrow distribution. The NO conversion of the MnOx/TiO2-SiO2 catalyst could be improved by the addition of an appropriate amount of CeO2 in the temperature range of 100-180 degrees C. MnOx-CeO2/TiO2-SiO2 with 10 wt-% CeO2 showed the highest activity with 96% NO conversion at 180 degrees C.
机译：通过共沉淀法获得TiO 2 -SiO 2混合氧化物。采用浸渍法制备了MnOx-CeO2 / TiO2-SiO2，并对其在低温下用NH3选择性催化还原NO的活性进行了评价。与纯TiO2相比，TiO2-SiO2的表面积和孔体积明显更大，平均孔径较小，分布较窄。通过在100-180摄氏度的温度范围内添加适量的CeO2，可以提高MnOx / TiO2-SiO2催化剂的NO转化率。CeO2含量为10％（重量）的MnOx-CeO2 / TiO2-SiO2表现出最高的180℃时具有96％NO转化率的活性。

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