| SnO2-TiO2负载CuO催化剂的CO氧化催化性能 |
| 摘要点击 1409 全文点击 1776 投稿时间：1998-11-16 |
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| 中文关键词 复合氧化物 CO氧化 CuO催化剂 SnO2－TiO2 |
| 英文关键词 carbon monoxide oxidation CuO titania-based mixed oxide stannic oxide |
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| 中文摘要 |
| 对2种n-型半导体(SnO2和TiO2)的复合氧化物负载的氧化铜催化剂的CO氧化催化性能进行了研究。采用程序升温反应方法,得到CO转化率随反应温度的变化曲线,CO最低全转化温度越低,活性越好。考察了载体的不同制备方法如成胶方法、干燥方法、焙烧温度以及不同SnO2:TiO2摩尔比对CO氧化性能的影响;此外,还考察了最佳活性组分的含量。结果表明:采用反滴方式成胶且在600℃下进行焙烧得到的复合载体的性能较好,而载体的不同干燥方法对催化剂的活性影响不大;复合载体中SnO2:TiO2摩尔比为40%时负载的CuO催化剂的活性最好。此外,CuO含量为10%～15%时最佳。 |
| 英文摘要 |
| The supported catalysts of CuO over stannic oxidetitania mixed oxides (CuO/SnO2-TiO2) have been prepared and tested for carbon monoxide oxidation in mixtures of carbon monoxide and air in feed gases by TPR method.The effects of preparation methods of the support,the mole ratio of stannic oxide and titania in mixed supports,calcination temperature as well as CuO loading upon the catalytic activity of CO oxidation were investigated.The results showed that,among the CuO/SnO2-TiO2 catalysts,the most favorable one was prepared with the CuO loading of 10%～15%,and the mole ratio of stannic oxide and titania of 40%.The added SnO2 have the synergistic ability in TiO2 support. |
