论文部分内容阅读
采用有机金属配合物固载法 ,将金的有机配合物 Au( PPh3) ( NO3)沉积于刚制备出的 Ni( OH) 2 沉淀上 ,与其表面的 - OH基反应 ,再于流动空气中程序升温焙烧 ,制备出了颗粒度小、分散度高的金催化剂 .改变制备条件 ,研究其对催化剂活性的影响 .结果表明 ,以 K2 CO3作为制备 Ni( OH) 2 的沉淀剂 ,金担载量为 3% (质量分数 ) ,在焙烧温度为 30 0℃的条件下 ,制备出的负载型金催化剂 Au/ Ni O对 CO的低温氧化具有很高的催化活性 .
The organometallic complex Au (PPh3) (NO3) was deposited on the freshly prepared Ni (OH) 2 precipitate by the immobilization method of organometallic complexes and reacted with the - OH groups on the surface of the Au (PPh3) The results showed that with K2CO3 as the precipitator for the preparation of Ni (OH) 2, the amount of gold supported Is 3% (mass fraction). Under the condition of calcination temperature of 300 ℃, the Au / NiO supported gold catalyst has high catalytic activity for low temperature oxidation of CO.