Preparation and Catalytic Properties of Nanosized Gold Catalysts

奈米金觸媒的製備與催化性質

陳郁文(Yu-Wen Chen)

《石油季刊》 42卷1期 (2006/03) Pp. 13-31

https://doi.org/10.30128/JP.200603.0002

摘要

奈米金觸媒在室溫下具有極高的一氣化碳氣化活性已廣為人知，金在6奈米以下才有活性，在6奈米以上則沒有活性，做為其擔體者一般是氣化鈦、氣化鐵、氧化鈷等可被還原的氧化物。顆粒直徑與擔體對於金的活性有很大關係，而製備方法則對其顆粒直徑有直接的影響。金觸媒在氣化與還原反應都有活性，但是到目前對其活性位置與反應機構尚未有定論。本文報導奈米金觸媒的製備方法，特性與其催化反應的應用。

關鍵字

金觸媒 ； 奈米顆粒 ； 一氧化碳氧化 ； 氫燃料電池之選擇性一氧化碳氧化

並列摘要

Nanosized gold particles have been well known to possess extremely high activity for CO oxidation. The suitable supports are the metal oxides that can be partially reduced, such as TiO2, Fe2O3, Co3O4, etc. Gold particle size and its support have great effect on the catalytic properties of gold in various redox applications. However, the active sites and reaction mechanism are still in debate. This report reviews the preparation, characterization and catalytic applications of nanosized gold catalysts for various reactions.

並列關鍵字

Gold Catalysts ； Nano-Particle ； CO Oxidation ； Iron Oxide Support ； Selective Oxidation of CO in H2 ； Fuel Cell