Low temperature oxidation of methane over Pd catalyst supported on metal oxides
Low temperature oxidation of methane over Pd catalyst supported on metal oxides
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DOI：
10.1016/s0920-5861(00)00273-x
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发表时间：
2000-06
期刊：
影响因子：
5.3
通讯作者：
K. Sekizawa;Hardiyanto Widjaja;Shingo Maeda;Y. Ozawa;K. Eguchi
中科院分区：
文献类型：
--
作者：
K. Sekizawa;Hardiyanto Widjaja;Shingo Maeda;Y. Ozawa;K. Eguchi
研究了用于甲烷低温氧化的负载型Pd催化剂。尽管Pd/ZrO2和Pd/SnO2的比表面积较小，但它们都表现出了良好的活性。Pd/ZrO2的活性强烈依赖于载体材料的晶相。与四方相相比，具有单斜晶相的ZrO2具有更高的催化活性。Pd/SnO2催化剂的催化活性受制备工艺的影响。用Pd(C5H7OO)2水溶液将Pd浸渍在SnO2上是提高催化剂活性的最有效方法。认为钯与载体材料之间相互作用的存在对催化活性有很大影响。
Supported Pd catalysts were investigated for low temperature oxidation of methane for catalytic combustor. Both, Pd/ZrO2and Pd/SnO2demonstrated excellent activity in spite of its low surface area. The activity of Pd/ZrO2was strongly dependent on the crystal phase of the support materials. ZrO2with a monoclinic phase enhanced the activity than that with a tetragonal phase. The catalytic activity of Pd/SnO2was affected by the preparation procedure. Impregnation of Pd on SnO2using Pd(C5H7OO)2aqueous solution was most effective in enhancing the catalytic activity. It is considered that catalytic activity is strongly influenced by the existence of interaction between palladium and support materials.