催化剂Au/NiO/TiO_2对富氢中CO催化活性研究  

Study on catalytic performance of Au/NiO/titania for selective oxidation of CO in hydrogen-rich gas

作　　者：王超[1] 徐新[1] 罗国华 

机构地区：[1]北京石油化工学院材料与化工学院

出　　处：《现代化工》2007年第z1期260-262,264,共4页Modern Chemical Industry

摘　　要：以纳米TiO2做载体用共沉淀法负载不同含量Au和NiO的催化剂,研究了在不同条件下制备的催化剂对富氢气体中CO催化转的转化率与选择性,并表征了合成的催化剂,对催化剂进行了活性评价.结果表明加入NiO有助于催化剂活性的提高,当催化剂的组成为Au(2%)/NiO(5%)/TiO2时,反应溶液pH值在9～11,催化剂的评价温度在30℃催化剂对CO的转化率与选择性最高.The catalysts containing various content of Au and NiO supported by nano-titania were prepared by the co-precipitation,and the conversion rate and selectivity of the catalysts,which were prepared in different conditions,for CO oxidation in hydrogen-rich gas were studied.And they were characterized and their catalytic activity was evaluated.It was found that the NiO played an important role for the Au(2%)/titania performance.The highest CO conversion rate and selectivity can be obtained when Au(2%)NiO(5%)/titania were used,pH was in 9～11,and the temperature at which catalyst was evaluated was 30℃.

关 键 词：氧化镍 催化剂Au/TiO2 富氢气体 催化活性 

分 类 号：O643.3[理学—物理化学]