文章摘要
逆уCeO2/CuχCo1-χOδ催化剂的制备 及其CO催化氧化性能
Preparation of Inverse уCeO2/CuχCo1-χOδ Catalysts and Their Catalytic Activities for CO Oxidation
投稿时间:2019-06-11  修订日期:2019-08-27
DOI:
中文关键词: CO催化氧化  CeO2  CuχCo1-χOδ  相互作用  Cu 和Co3
英文关键词: CO catalystic oxidation  CeO2  CuχCo1-χOδ  interaction  Cu and Co3
基金项目:2018上海市人才发展资金资助项目(2018019)
作者单位E-mail
谷荣彩 上海化工研究院有限公司 19921306225@163.com 
叶丽萍 上海化工研究院有限公司 ylp_by@126.com 
摘要点击次数: 32
全文下载次数: 0
中文摘要:
      采用共沉淀法-浸渍相结合的制备方法,通过XRD、BET、H2 -TPR、XPS研究了CuO 与 Co3O4 质量比(mCuO:mCo3O4)、表面CeO2负载量对逆负载 уCeO2/CuχCo1-χOδ催化剂催化氧化性能的影响。结果表明:15% CeO2/Cu0.2Co0.8Oδ 催化剂性能最佳: 由于15% CeO2/Cu0.2Co0.8Oδ 比表面积较大,两相界面较多,进而使得CeO2与Cu-Co-O固溶体相互作用较强,表面存在较多的氧空穴、Cu 和Co3 ,催化剂还原温度较低,催化活性较好。常压下,当反应温度为75℃时,CO转化率可达100% 。
英文摘要:
      A series of inverse уCeO2/CuχCo1-χOδ catalysts were prepared by combinations of co-precipitation method and impregnation method. The influences of the mass ratio of CuO∶Co3O4 and CeO2 loading on the catalytic performance in CO oxidation were investigated using XRD, BET, H2-TPR and XPS techniques. The results revealed that 15%CeO2/Cu0.2Co0.8Oδ catalyst demonstrated the best catalytic performance. It was mainly due to the large specific surface area of 15%CeO2/Cu0.2Co0.8Oδ, more interface, which led to a strong interaction between CeO2 and Cu-Co-O, the more oxygen vacancy, Cu and Co3 on the surface. The reduction temperature decrease of 15%CeO2/Cu0.2Co0.8Oδ enhanced the catalytic activity. Thus, 15% CeO2/Cu0.2Co0.8Oδ catalyst exhibited a higher catalytic activity in the carbon monoxide oxidation with 100% CO conversion at the temperature as low as 75℃ under atmospheric pressure.
View Fulltext   查看/发表评论  下载PDF阅读器
关闭