摘要
以堇青石蜂窝陶瓷(CC)为载体,采用浸渍法制备了堇青石负载Pd和过渡金属混合氧化物催化剂,记作Pd-M-Mn(M=Cu,Co,Fe,Ni)/CC。实验结果表明:Pd-Co-Mn/CC催化剂的催化活性最高;随着Pd负载量的增加,CO转化率提高;当Pd负载量为1.00%时,反应温度为150℃时CO转化率达到98%,200℃时CO转化率达到100%;在反应温度150℃条件下,Pd-Co-Mn/CC催化剂(Pd负载量1.00%)的CO转化率在前30 h内小幅度下降,随后稳定在90%以上,反应100 h后,催化剂表面颜色由黑色变为棕褐色。
Using cordierite honeycomb ceramic(CC) as carrier,the cordierite-supported Pd and transition metal oxide catalysts(Pd-M-Mn(M=Cu,Co,Fe,Ni)/CC) were prepared by impregnation method.The experimental results show that:The catalytic activity of Pd-Co-Mn/CC is the highest;The CO conversion increases with the increasing of Pd loading;When the Pd loading is 1.00%,the CO conversion is 98% with 150 ℃ of reaction temperature and 100% with 200 ℃ of reaction temperature;Under the condition of reaction temperature 150 ℃,the CO conversion on Pd-Co-Mn/CC with 1.00% of Pd loading is decreased to above 90% in 30 h;After 100 h of reaction,the color of the catalyst surface is changed from black to brown.
出处
《化工环保》
CAS
CSCD
北大核心
2013年第2期162-166,共5页
Environmental Protection of Chemical Industry
基金
国家自然科学基金资助项目(51172107)
江苏省环境工程重点实验室科研开放课题(KF2012001)
关键词
堇青石
蜂窝陶瓷
钯
过渡金属
混合氧化物
催化氧化
一氧化碳
废气处理
cordierite
honeycomb ceramic
palladium
transition metal
mixed oxide
catalytic oxidation
carbon monoxide
waste gas treatment