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Article: Monte Carlo study of the capacitance of the double layer in a model molten salt

TitleMonte Carlo study of the capacitance of the double layer in a model molten salt
Authors
KeywordsPhysics chemistry
Issue Date1999
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jsp
Citation
Journal Of Chemical Physics, 1999, v. 110 n. 11, p. 5346-5350 How to Cite?
AbstractMonte Carlo simulations are reported for charged hard spheres at high density near a charged wall. This system is a simple model for a molten salt double layer. Unfortunately, the reduced temperatures that correspond to experiment are very small. This results in a large Boltzmann factor. As a result, we are unable to obtain meaningful results for such low values and report results only for moderately low values of the reduced temperature. Even so, our results should be a useful benchmark. Further, we are able to give a qualitative answer to an interesting question. We find that at low temperatures the capacitance near the point of zero charge increases with increasing temperature. This agrees with experiment for molten salts and disagrees with the behavior of double layer in dissolved salts, which can be modeled with low density and high temperature charged hard spheres near a wall. This also disagrees with the predictions of the Gouy-Chapman theory and the mean spherical approximation. It appears that it is the approximations, and not the charged hard sphere double layer model, that are at fault for describing double layers in molten salts. © 1999 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42345
ISSN
2015 Impact Factor: 2.894
2015 SCImago Journal Rankings: 0.959
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBoda, Den_HK
dc.contributor.authorHenderson, Den_HK
dc.contributor.authorChan, KYen_HK
dc.date.accessioned2007-01-29T08:47:27Z-
dc.date.available2007-01-29T08:47:27Z-
dc.date.issued1999en_HK
dc.identifier.citationJournal Of Chemical Physics, 1999, v. 110 n. 11, p. 5346-5350en_HK
dc.identifier.issn0021-9606en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42345-
dc.description.abstractMonte Carlo simulations are reported for charged hard spheres at high density near a charged wall. This system is a simple model for a molten salt double layer. Unfortunately, the reduced temperatures that correspond to experiment are very small. This results in a large Boltzmann factor. As a result, we are unable to obtain meaningful results for such low values and report results only for moderately low values of the reduced temperature. Even so, our results should be a useful benchmark. Further, we are able to give a qualitative answer to an interesting question. We find that at low temperatures the capacitance near the point of zero charge increases with increasing temperature. This agrees with experiment for molten salts and disagrees with the behavior of double layer in dissolved salts, which can be modeled with low density and high temperature charged hard spheres near a wall. This also disagrees with the predictions of the Gouy-Chapman theory and the mean spherical approximation. It appears that it is the approximations, and not the charged hard sphere double layer model, that are at fault for describing double layers in molten salts. © 1999 American Institute of Physics.en_HK
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dc.format.extent26624 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jcp.aip.org/jcp/staff.jspen_HK
dc.relation.ispartofJournal of Chemical Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysics chemistryen_HK
dc.titleMonte Carlo study of the capacitance of the double layer in a model molten salten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-9606&volume=110&issue=11&spage=5346&epage=5350&date=1999&atitle=Monte+Carlo+study+of+the+capacitance+of+the+double+layer+in+a+model+molten+salten_HK
dc.identifier.emailChan, KY:hrsccky@hku.hken_HK
dc.identifier.authorityChan, KY=rp00662en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.478429en_HK
dc.identifier.scopuseid_2-s2.0-0347662740en_HK
dc.identifier.hkuros42675-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0347662740&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume110en_HK
dc.identifier.issue11en_HK
dc.identifier.spage5346en_HK
dc.identifier.epage5350en_HK
dc.identifier.isiWOS:000079012200038-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridBoda, D=7005945596en_HK
dc.identifier.scopusauthoridHenderson, D=7402988756en_HK
dc.identifier.scopusauthoridChan, KY=7406034142en_HK

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