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  • 期刊

奈米金觸媒之性質與應用

摘要


傳統上,金由於其特殊的電子組態,使得金具有穩定的物理化學性質且沒有很好的催化特性。近年由Haruta博士發現當金沈積在金屬氧化物上,可在低溫下催化CO氧化。從此金觸媒成為目前在環境或工業應用上,最具潛力的、最有吸引力的觸媒系統。本文彙整有關金之基本物理化學性質,以及粒徑小於5nm之金觸媒的製備方法、載體種類、CO氧化反應之機制,以及相關之應用與未來發展。

關鍵字

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並列摘要


Cold, due to its special electronic configuration, is not an active catalyst in the bulk form. Since Haruta discovered that nanosized gold supported on TiO2 and other transition metal oxides is very active for CO oxidation at low temperature, many researchers have devoted on the catalytic properties of nanosized gold catalysts. This report reviews the physical and chemical properties of nanosized gold catalysts and its preparation methods. The effect of support, particle size and the reaction mechanism of CO oxidation are also reviewed in detail. The applications in catalytic reactions and future developments are also included in this report.

並列關鍵字

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