Enhancement in the Hg^(0) oxidation efficiency and sulfur resistance of CuCl_(2)-modified MnO_(x)-CeO_(x) nanorod catalysts  

作　　者：Shujie GAO Yongjin HU Zhichang JIANG Xiaoxiang WANG Dong YE Changxing HU 

机构地区：[1]College of Quality&Safety Engineering,China Jiliang University,Hangzhou 310018,China [2]Key Laboratory of Biomass Chemical Engineering of Ministry of Education,Institute of Industrial Ecology and Environment,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China [3]School of Mechatronics and Energy Engineering,Ningbo Tech University,Ningbo 315100,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2024年第8期680-686,共7页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(No.LQ22E060003);the General Research Projects of Zhejiang Provincial Department of Education in 2023(No.Y202353660);the Public Welfare Science and Technology Project of Ningbo City(No.202002N3105),China.

摘　　要：In this study,a series of CuCl_(2)-modified MnO_(x)-CeO_(x)nanorods were synthesized for the oxidation of Hg^(0).The addition of CuCl_(2)resulted in an enhancement in the catalyst’s Hg^(0)oxidation ability,and Hg^(0)oxidation efficiency reached>97%from 150 to 250°C.In the MnO_(x)-CeO_(x)catalysts,Mn^(4+)played the role of the active species for Hg^(0)oxidization,but in the CuCl_(2)-doped catalysts Cl−also contributed to Hg^(0)oxidation,conferring the superior performance of these samples.The introduction of SO_(2) led to a decrease in the availability of Mn^(4+),and the Hg^(0)oxidation efficiency of MnO_(x)-CeO_(x)decreased from about 100%to about 78%.By contrast,CuCl_(2)-promoted samples maintained a Hg^(0)oxidation efficiency of about 100%during the SO_(2) deactivation cycle due to the high reactivity of Cl−.

关 键 词：Hg^(0)oxidation CuCl_(2)modification MnO_(x)-CeO_(x)nanorods Sulfur resistance O_(x)idation activity 

分 类 号：TQ426[化学工程] X773[环境科学与工程—环境工程]