摘要
在不同模板剂条件下,采用水热法和共沉淀法制备了纤维状、片状、棉花状和页岩状CeO2/Cu0.2Co0.8Oδ催化剂,并对催化剂的结构和活性评价数据进行表征与分析。结果表明,共沉淀法制备的页岩状CeO2/Cu0.2Co0.8Oδ催化剂催化CO的氧化性能最好,CO转化率达到100%时的温度最低(75℃)。在常温、3 MPa条件下可将液相丙烯中CO体积分数脱除至2×10^-8。页岩状CeO2/Cu0.2Co0.8Oδ催化剂催化活性好的主要原因是其低温还原性能好、催化剂上CeO2高度分散、CeO2与载体之间有较强的相互作用。
Fiber-like,flake-like,cotton-like and shale-like CeO2/Cu0.2Co0.8Oδcatalysts are prepared via hydrothermal and co-precipitation methods under different templating conditions.It is verified that shale-like CeO2/Cu0.2Co0.8Oδprepared by co-precipitation method has the best catalytic performance for CO oxidation,over which the temperature required to achieve 100%CO conversion is 75℃,being the lowest among the four kinds of catalysts.Over such shale-like catalyst,the volume fraction of CO in liquid propylene can be removed to 2×10^-8 at room temperature and 3 MPa.Based on the characterization results and activity data,it is concluded that the main reasons for the best catalytic activity of shale-like CeO2/Cu0.2Co0.8Oδare contributed to its best low-temperature reducibility,highly dispersed CeO2 nanoparticles,and the strong interaction between CeO2 nanoparticles and the support.
作者
李磊
杨丙星
申宏鹏
叶丽萍
金政伟
黄金花
LI Lei;YANG Bing-xing;SHEN Hong-peng;YE Li-ping;JIN Zheng-wei;HUANG Jin-hua(Research Institute of Coal Chemical Industry Technology,Ningxia Coal Industry Co.,Ltd.,China Energy Investment Corporation,,Yinchuan 750411,China;Ningxia Innovation Centre of Synergetic Technology of Coal-based Value-added Synthetic Resin Industry,Yinchuan 750411,China;State Key Laboratory of Polyolefin Catalytic Technology and Performance Materials,Shanghai 200062,China;Shanghai Research Institute of Chemical Industry Co.,Ltd.,Shanghai 200062,China)
出处
《现代化工》
CAS
CSCD
北大核心
2020年第7期150-154,共5页
Modern Chemical Industry
基金
宁夏煤基合成树脂高值化产业技术协同创新中心(2017DC57)
上海人才发展资金(2018019)。
关键词
载体形貌
CO催化氧化
液相丙烯
support morphology
catalytic oxidation of CO
liquid propylene
