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Hg metal surfaces: towards Hg abatement in steel plants
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
2005 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH , 2005. , 48 p.
Keyword [en]
iron, mercury, zinc, copper, Auger electron spectroscopy, thermal desorption, polycrystalline surfaces, adsorption, X-ray photoelectron spectroscopy, LA-ICP-TOFMS
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-4086ISBN: 91-7178-233-8 (print)OAI: oai:DiVA.org:kth-4086DiVA: diva2:10667
Presentation
2005-12-08, Sal B2, KTH, Brinellvägen, Stockholm, 10:00
Supervisors
Note
QC 20101220Available from: 2006-08-23 Created: 2006-08-23 Last updated: 2010-12-20Bibliographically approved
List of papers
1. The surface behavior of mercury on iron systems
Open this publication in new window or tab >>The surface behavior of mercury on iron systems
2006 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 37, no 6, 1049-1056 p.Article in journal (Refereed) Published
Abstract [en]

Thermal desorption Auger electron spectroscopy (TDAES) was used to investigate the circumstances under which mercury is adsorbed on the surface of iron in the temperature interval of 85 to 298 K. The effects of chlorine and oxygen modifications on the iron surface have also been investigated within the same temperature interval. It was seen that chlorine reduced the adsorption of mercury on polycrystalline iron at 85 K, as did oxygen. On the clean iron system at 298 K, only one monolayer (ML) of mercury adsorbed. The physisorption of mercury on chlorine and oxygen layers at low temperatures (LTs) is discussed in combination with the calculated activation energies of desorption, as well as the factors affecting the mechanism of adsorption at room temperature.

Keyword
atmospheric mercury, chemisorption, speciation, films
National Category
Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:kth:diva-16221 (URN)10.1007/BF02735027 (DOI)000242967000023 ()2-s2.0-33846199496 (Scopus ID)
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved
2. Surface chemistry of mercury on zinc and copper
Open this publication in new window or tab >>Surface chemistry of mercury on zinc and copper
2006 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 37, no 6, 1057-1066 p.Article in journal (Refereed) Published
Abstract [en]

Thermal desorption Auger electron spectroscopy (TDAES) was used to investigate mercury adsorption on the surfaces of zinc (Zn) and copper (Cu) in the temperature interval of 85 to 298 K. The effects of chlorine and oxygen modifications on the surfaces have also been investigated within the same temperature interval. On single crystalline Zn(0001), no mercury was adsorbed under any temperature or deposition conditions. On polycrystalline Zn at 85 K, a monolayer (ML) of mercury adsorbed, whereas no measurable quantity was observed at room temperature (RT). Predeposited chlorine was removed by exposure to mercury, most probably through formation of volatile HgCl2. Chlorine enhanced the adsorption of mercury on polycrystalline Cu at 87 K, whereas preoxidation reduced the coverage. Low temperatures (LTs) were conducive to mercury adsorption as compared to 298 K for the Cu systems studied. The physisorption of mercury on chlorine and oxygen layers at LTs is discussed, as well as the factors affecting the mechanism of adsorption at RTs. The desorption energies and surface enthalpies have been calculated for each system with mercury adsorption.

Keyword
atmospheric mercury, chlorine, zno(0001)-zn, adsorption, speciation
Identifiers
urn:nbn:se:kth:diva-16222 (URN)10.1007/BF02735028 (DOI)000242967000024 ()2-s2.0-33846223829 (Scopus ID)
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved
3. Surface composition of industrial metal samples with potential for atmospheric mercury deposition
Open this publication in new window or tab >>Surface composition of industrial metal samples with potential for atmospheric mercury deposition
2010 (English)Report (Other academic)
Abstract [en]

Laser Ablation Inductively Coupled Plasma Time of Flight Mass Spectrometry, Auger electron spectroscopy and X-ray photoelectron spectroscopy were used to study atmospherically exposed metal samples for surface mercury concentration at room temperature. The metals were collected from industrial and pre-conditioned sources. In most cases, mercury detection was impossible because the samples were found to be highly contaminated from sources such as oxygen, carbon, chlorine and sulfur. However, the methods were effective at determining surface atoms and bulk substrate atoms that may be surface diffusive. Depth profiling was conducted on the samples that were found to contain mercury.

Place, publisher, year, edition, pages
Stockholm: KTH, 2010. 20 p.
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-26127 (URN)KTH/MSE--05/91--SE+THMETU/ART (ISRN)
Note
QC 20101116Available from: 2010-11-16 Created: 2010-11-16 Last updated: 2010-12-20Bibliographically approved

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