标题: Removal of Mercury from Coal-Fired Flue Gas and Its Sulfur Tolerance Characteristics by Mn, Ce Modified gamma-Al(2)O(3)Catalyst

作者: He, Z (He, Zhong); Xie, YT (Xie, Yating); Wang, Y (Wang, Yuan); Xu, JJ (Xu, Jingjie); Hu, JJ (Hu, Jiangjun)

来源出版物: JOURNAL OF CHEMISTRY 卷: 2020 文献号: 8702745 DOI: 10.1155/2020/8702745 出版年: AUG 3 2020

摘要: Mercury pollution in the atmospheric environment is a matter of international concern. Mercury in coal-fired flue gas is the first human mercury emission source and has become the focus of national mercury pollution control. The catalytic performance of zerovalent mercury (Hg-0) in coal-fired flue gas was studied by using manganese-cerium-aluminum oxide as catalyst. The effects of metal loading ratio, reaction temperature, calcination temperature, and O(2)and SO(2)concentration on the efficiency of Hg(0)catalytic removal were investigated, and the Mn-Ce/gamma-Al(2)O(3)catalysts before and after the reaction were characterized by BET, SEM, XRD, and XPS to analyze the physicochemical properties of the samples. The results show that the mercury removal efficiency of the composite catalyst with Mn, Ce, and Al as the active component is higher than that of the single metal catalyst. The catalytic activity of Mn0.1Ce0.02Al is the best, the optimum reaction temperature is 150 degrees C, the optimum calcination temperature is 400 degrees C, and the O(2)concentration in the conventional flue gas condition satisfies the effective oxidation of Hg-0; SO(2)in the flue gas can seriously inhibit the oxidation of Hg-0.

入藏号: WOS:000562882700001

语言: English

文献类型: Article

KeyWords Plus: SELECTIVE CATALYTIC-REDUCTION; GASEOUS ELEMENTAL MERCURY; MANGANESE OXIDE/TITANIA MATERIALS; OXIDIZED MERCURY; OXIDATION; NO; OXIDES; HG-0; ADSORPTION; SPECIATION

地址: [He, Zhong; Xie, Yating; Wang, Yuan; Xu, Jingjie; Hu, Jiangjun] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

通讯作者地址: Hu, JJ (corresponding author)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.

电子邮件地址: jjhu1963@outlook.com

影响因子：1.79