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Title: XANES study of elemental mercury oxidation over RuO2/TiO2 and selective catalytic reduction catalysts for mercury emissions control

Abstract

Linear combination fitting of the X-ray Absorption Near Edge Spectroscopy (XANES) was used to quantify oxidized mercury species over RuO2/TiO2 and Selective Catalytic Reduction (SCR) catalysts under different simulated flue gas conditions. Halogen gases play a major role in mercury oxidation. In the absence of halogen gas, elemental mercury can react with sulfur that is contained in both the RuO2/TiO2 and SCR catalysts to form HgS and HgSO4. In the presence of HCl or HBr gas, HgCl2 or HgBr2 is the main oxidized mercury species. When both HCl and HBr gases are present, HgBr2 is the preferred oxidation product and no HgCl2 can be found. The formation of HgO and HgS cannot be neglected with or without halogen gas. Other simulated flue gas components such as NO, NH3, SO2 and CO2 do not have significant effect on oxidized mercury speciation when halogen gas is present.

Authors:
 [1];  [1];  [1]; ORCiD logo [1];  [2]
  1. Univ. of Cincinnati, OH (United States). Chemical Engineering Program, Dept. of Biomedical, Chemical, and Environmental Engineering
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; National Science Foundation (NSF)
OSTI Identifier:
1427551
Alternate Identifier(s):
OSTI ID: 1430542
Grant/Contract Number:  
AC02-06CH11357; 1151017
Resource Type:
Accepted Manuscript
Journal Name:
Fuel Processing Technology
Additional Journal Information:
Journal Volume: 153; Journal Issue: C; Journal ID: ISSN 0378-3820
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 47 OTHER INSTRUMENTATION; SCR; linear combination fitting; mercury oxidation; XANES; ruthenium oxide

Citation Formats

Liu, Zhouyang, Li, Can, Sriram, Vishnu, Lee, Joo-Youp, and Brewe, Dale. XANES study of elemental mercury oxidation over RuO2/TiO2 and selective catalytic reduction catalysts for mercury emissions control. United States: N. p., 2016. Web. doi:10.1016/j.fuproc.2016.07.018.
Liu, Zhouyang, Li, Can, Sriram, Vishnu, Lee, Joo-Youp, & Brewe, Dale. XANES study of elemental mercury oxidation over RuO2/TiO2 and selective catalytic reduction catalysts for mercury emissions control. United States. doi:10.1016/j.fuproc.2016.07.018.
Liu, Zhouyang, Li, Can, Sriram, Vishnu, Lee, Joo-Youp, and Brewe, Dale. Mon . "XANES study of elemental mercury oxidation over RuO2/TiO2 and selective catalytic reduction catalysts for mercury emissions control". United States. doi:10.1016/j.fuproc.2016.07.018. https://www.osti.gov/servlets/purl/1427551.
@article{osti_1427551,
title = {XANES study of elemental mercury oxidation over RuO2/TiO2 and selective catalytic reduction catalysts for mercury emissions control},
author = {Liu, Zhouyang and Li, Can and Sriram, Vishnu and Lee, Joo-Youp and Brewe, Dale},
abstractNote = {Linear combination fitting of the X-ray Absorption Near Edge Spectroscopy (XANES) was used to quantify oxidized mercury species over RuO2/TiO2 and Selective Catalytic Reduction (SCR) catalysts under different simulated flue gas conditions. Halogen gases play a major role in mercury oxidation. In the absence of halogen gas, elemental mercury can react with sulfur that is contained in both the RuO2/TiO2 and SCR catalysts to form HgS and HgSO4. In the presence of HCl or HBr gas, HgCl2 or HgBr2 is the main oxidized mercury species. When both HCl and HBr gases are present, HgBr2 is the preferred oxidation product and no HgCl2 can be found. The formation of HgO and HgS cannot be neglected with or without halogen gas. Other simulated flue gas components such as NO, NH3, SO2 and CO2 do not have significant effect on oxidized mercury speciation when halogen gas is present.},
doi = {10.1016/j.fuproc.2016.07.018},
journal = {Fuel Processing Technology},
number = C,
volume = 153,
place = {United States},
year = {2016},
month = {7}
}

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