Effect of Humidity on Formaldehyde Oxidation over Ce_(0.8)Zr_(0.2)O_(y)Catalyst  

作　　者：TANG Ruijiu YANG Zonglin LIU Xiang JIA Lijuan WANG Fang DUAN Kaijiao LIU Tiancheng 唐瑞玖;刘天成

机构地区：[1]College of Chemistry and Environment,Yunnan Minzu University,Technology Innovation Team of Green Purification Technology for Industrial Waste Gas,Education Department of Yunnan,Key Laboratory of Environmental Functional Materials of Yunnan Province Education Department,Kunming 650504,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第5期1108-1115,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Young and Middle-aged Academic and Technical Leaders Reserve Talent Project of Yunnan Province(No.202105AC160054)。

摘　　要：In the preparation of a series of Ce_(0.8)Zr_(0.2)O_(y)catalysts catalyzing the removal of formaldehyde,BET,H2-TPR,IR,SEM,XPS,and XRD were used to characterize the catalyst,and the influence of humidity on the catalyst activity was studied by adjusting the humidity during the process.The experimental results showed that the formaldehyde removal rate increased with the increase of humidity.When the humidity was higher than 50%,the formaldehyde removal rate decreased by 3%over that when the humidity was 50%.The characterization results showed that humidity facilitated the activation of oxygen and the formation of hydroxyl groups,which both promoted the formation and oxidative decomposition of intermediates and prevented the deposition of intermediates that clogged the pores,allowing more formaldehyde to be adsorbed and oxidized,which increased the activity of the catalyst.This provides new mechanistic evidence for the oxidation of formaldehyde and helps in the development of relatively low-cost materials for formaldehyde purification.

关 键 词：FORMALDEHYDE humidity Ce_(0.8)Zr_(0.2)O_(y) catalytic oxidation 

分 类 号：X51[环境科学与工程—环境工程] O643.36[理学—物理化学]