| Survey of catalysts for oxidation of mercury in flue gas. | |
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MedLine Citation:
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PMID: 17007115 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Methods for removing mercury from flue gas have received increased attention because of recent limitations placed on mercury emissions from coal-fired utility boilers by the U. S. Environmental Protection Agency and various states. A promising method for mercury removal is catalytic oxidation of elemental mercury (Hg0) to oxidized mercury (Hg2+), followed by wet flue gas desulfurization (FGD). FGD cannot remove Hg0, but easily removes Hg2+ because of its solubility in water. To date, research has focused on three broad catalyst areas: selective catalytic reduction catalysts, carbon-based materials, and metals and metal oxides. We review published results for each type of catalyst and also present a discussion on the possible reaction mechanisms in each case. One of the major sources of uncertainty in understanding catalytic mercury oxidation is a lack of knowledge of the reaction mechanisms and kinetics. Thus, we propose that future research in this area should focus on two major aspects: determining the reaction mechanism and kinetics and searching for more cost-effective catalyst and support materials. |
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Authors:
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Albert A Presto; Evan J Granite |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Review |
Journal Detail:
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Title: Environmental science & technology Volume: 40 ISSN: 0013-936X ISO Abbreviation: Environ. Sci. Technol. Publication Date: 2006 Sep |
Date Detail:
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Created Date: 2006-09-29 Completed Date: 2006-12-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0213155 Medline TA: Environ Sci Technol Country: United States |
Other Details:
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Languages: eng Pagination: 5601-9 Citation Subset: IM |
Affiliation:
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National Energy Technology Laboratory, United States Department of Energy, P.O. Box 10940, MS 58-103A, Pittsburgh, Pennsylvania 15236-0940, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Pollutants
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chemistry*,
isolation & purification Air Pollution / prevention & control Catalysis Coal* Gases / chemistry Mercury / chemistry*, isolation & purification Metals / chemistry Oxidation-Reduction Oxides / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Air Pollutants; 0/Coal; 0/Gases; 0/Metals; 0/Oxides; 7439-97-6/Mercury |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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