铈铜铝复合氧化物催化剂的构筑及催化氧化CO研究  

Construction of Cerium Copper Aluminum Composite Oxide Catalyst and Its Catalytic Oxidation of CO

作　　者：刘娟[1] 于威威 周暾 刘优林 黄春霞 王佳 LIU Juan;YU Wei-wei;ZHOU Tun;LIU You-lin;HUANG Chun-xia;WANG Jia(Jiangsu SOPO(Group)Co.Ltd.,Zhenjiang 212006,China;College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 211816,China;Jiangsu SOPO Chemical Co.Ltd.,Zhenjiang 212006,China)

机构地区：[1]江苏索普(集团)有限公司,江苏镇江212006 [2]南京工业大学材料科学与工程学院,江苏南京211816 [3]江苏索普化工股份有限公司,江苏镇江212006

出　　处：《安徽化工》2024年第6期96-99,共4页Anhui Chemical Industry

摘　　要：采用水热法在拟薄水铝石表面原位生长铈铜双金属有机骨架(Ce-Cu-MOFs)材料,得到复合前驱体,通过高温焙烧处理,构筑出新型的Ce-Cu-MOFs-Al_(2)O_(3)复合材料。研究发现,拟薄水铝石作为氧化铝载体的前驱体,可有效分散活性组分Cu,提升催化性能。将铈引入到Cu-MOF中形成双金属MOF,考查铈的引入量对铜铈铝复合氧化物催化效果的影响,优化配伍得到的Ce0.50-Cu-MOFs-Al_(2)O_(3)催化剂在空速30000 h^(-1),10000 mL/m^(3)CO条件下,155℃达到98%的转化率,200℃到达100%转化率,展现出高效的催化氧化CO性能。研究发现,Ce的引入使得催化剂中产生更多的活性位,有利于活性位数量的增加,进一步提升催化性能。Al_(2)O_(3) Carrier and Ce were introduced into the structure of copper metal-organic skeletons(Cu-MOFs)by hydro-thermal method,and the precursors obtained were treated by high-temperature roasting to construct novel Ce-Cu-MOFs-Al_(2)O_(3) composites.It was found that Al_(2)O_(3) as a carrier could effectively disperse the active components of the catalyst,which was conducive to the enhancement of the catalytic performance.The introduction of Ce would generate more oxygen vacan-cies and facilitate the further dispersion of the active species to enhance the catalytic performance.However,the excessive amount of Ce would seriously damage the backbone structure of the Cu-MOFs,resulting in the reduction of the catalytic ac-tivity.In this paper,we investigated the influence of the loading amount of cerium on the catalytic effect of Cu-Ce-Al_(2)O_(3) composite oxides.The effect of cerium loading on the catalytic effect of Cu-Ce-Al_(2)O_(3) composite oxides was investigated,and the optimized Ce0.50-Cu-MOFs-Al_(2)O_(3) catalyst reached 98%conversion at 155℃and 100%at 200℃under the conditions of 30000 h^(-1) air velocity and 10000 mL/m^(3) CO,demonstrating highly efficient catalytic oxidation performance of CO.

关 键 词：水热法 Ce-Cu-MOFs 拟薄水铝石 催化氧化CO 

分 类 号：TQ426[化学工程]