摘要
We have successfully synthesized a series of Pd/ZnCo_(2)O_(4)supported catalytic materials with low noble metal loading and high activity by the impregnation method.The Pd/ZnCo_(2)O_(4)catalysts containing 0.2%Pd have superior performance for oxidizing CO at 80℃,achieving 100%conversion.There is also no loss of activity after four cycles of tests,with the conversion remaining approximately 100%.Aside from that,various advanced physicochemical characterizations indicate that this excellent catalytic performance stems from the interaction between metal Pd and carrier ZnCo_(2)O_(4).Pd provides a higher degree of accessibility to the active site,while ZnCo_(2)O_(4)as a carrier can better stabilize Pd nanoparticles.The 0.2%Pd/ZnCo_(2)O_(4)exhibits higher levels of Pd^(2+)species as the electronic interaction between Pd and ZnCo_(2)O_(4)improves,thus improving CO oxidation catalytic efficiency.Furthermore,the low loading of Pd is crucial for reducing the cost of noble metal catalysts and ameliorating their practicality in industrial applications.
基金
supported by the the financial aid from National Science and Technology Major Project of China(No.2021YFB3500700)
National Natural Science Foundation of China(No.22020102003,22025506 and 22271274)
Program of Science and Technology Development Plan of Jilin Province of China(No.20230101035JC and 20230101022JC).
作者简介
Corresponding author:Xiao Wang.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,130022,PR China.E-mail address:wangxiao@ciac.ac.cn;Corresponding author:Shuyan Song.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,130022,PR China.E-mail address:songsy@ciac.ac.cn;Corresponding author:Hongjie Zhang.State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,130022,PR China.E-mail address:hongjie@ciac.ac.cn.
