title: Elemental Mercury Oxidation over Fe-Ti-Mn Spinel: Performance, Mechanism, and Reaction Kinetics.
abstract: The design of a high-performance catalyst for Hg0oxidation and predicting the extent of Hg0oxidation are both extremely limited due to the uncertainties of the reaction mechanism and the reaction kinetics. In this work, Fe-Ti-Mn spinel was developed as a high-performance catalyst for Hg0oxidation, and the reaction mechanism and the reaction kinetics of Hg0oxidation over Fe-Ti-Mn spinel were studied. The reaction orders of Hg0oxidation over Fe-Ti-Mn spinel with respect to gaseous Hg0concentration and gaseous HCl concentration were approximately 1 and 0, respectively. Therefore, Hg0oxidation over Fe-Ti-Mn spinel mainly followed the Eley-Rideal mechanism (i.e., the reaction of gaseous Hg0with adsorbed HCl), and the rate of Hg0oxidation mainly depended on Cl•concentration on the surface. As H2O, SO2, and NO not only inhibited Cl•formation on the surface but also interfered with the interface reaction between gaseous Hg0and Cl•on the surface, Hg0oxidation over Fe-Ti-Mn spinel was obviously inhibited in the presence of H2O, SO2, and NO. Furthermore, the extent of Hg0oxidation over Fe-Ti-Mn spinel can be predicted according to the kinetic parameter kE-R, and the predicted result was consistent with the experimental result.
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Shangchao
authors.initials: S
authors.lastname: Xiong
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Xin
authors.initials: X
authors.lastname: Xiao
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Nan
authors.initials: N
authors.lastname: Huang
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Hao
authors.initials: H
authors.lastname: Dang
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Liao
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Sijie
authors.initials: S
authors.lastname: Zou
authors.affiliation: Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology , Nanjing, 210094 P. R. China.
authors.forename: Shijian
authors.identifier: 0000-0002-8275-5225
authors.initials: S
authors.lastname: Yang
mesh_terms: D002384:Catalysis; D007700:Kinetics; D008628:Mercury; D010084:Oxidation-Reduction; D014025:Titanium
chemical_list: D014025:Titanium; D008628:Mercury