The adsorption of nitrogen and argon by evaporated films of sodium chloride

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dc.contributor.advisorLinder, Peter Wen_ZA
dc.contributor.authorRodgers, Allen Len_ZA
dc.date.accessioned2016-10-18T11:34:19Z
dc.date.available2016-10-18T11:34:19Z
dc.date.issued1969en_ZA
dc.description.abstractAn ultra-high vacuum apparatus has been designed and constructed. Pressures of the order of 1 x 10⁻⁸ torr have been attained routinely. The adsorption of nitrogen by Pyrex has been investigated and the results obtained have shown good agreement with those in the literature. Rigorously cleaned evaporated films of sodium chloride have been prepared and the adsorption of nitrogen and argon by them has been investigated. Isosteric heats and entropies of adsorption have been determined and theoretical entropies calculated. The appearance of a group of sites of uniform activity, hitherto unavailable owing to contamination of the surface, is postulated. The adsorption of nitrogen and argon has been found to be reasonably well represented by the immobile, localized model with indications of the adsorbed argon molecules occupying a different set of sites from the adsorbed nitrogen. Two novel methods for the preparation of evaporated films of alkali halides are suggested.en_ZA
dc.identifier.apacitationRodgers, A. L. (1969). <i>The adsorption of nitrogen and argon by evaporated films of sodium chloride</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Chemistry. Retrieved from http://hdl.handle.net/11427/22174en_ZA
dc.identifier.chicagocitationRodgers, Allen L. <i>"The adsorption of nitrogen and argon by evaporated films of sodium chloride."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Chemistry, 1969. http://hdl.handle.net/11427/22174en_ZA
dc.identifier.citationRodgers, A. 1969. The adsorption of nitrogen and argon by evaporated films of sodium chloride. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Rodgers, Allen L AB - An ultra-high vacuum apparatus has been designed and constructed. Pressures of the order of 1 x 10⁻⁸ torr have been attained routinely. The adsorption of nitrogen by Pyrex has been investigated and the results obtained have shown good agreement with those in the literature. Rigorously cleaned evaporated films of sodium chloride have been prepared and the adsorption of nitrogen and argon by them has been investigated. Isosteric heats and entropies of adsorption have been determined and theoretical entropies calculated. The appearance of a group of sites of uniform activity, hitherto unavailable owing to contamination of the surface, is postulated. The adsorption of nitrogen and argon has been found to be reasonably well represented by the immobile, localized model with indications of the adsorbed argon molecules occupying a different set of sites from the adsorbed nitrogen. Two novel methods for the preparation of evaporated films of alkali halides are suggested. DA - 1969 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1969 T1 - The adsorption of nitrogen and argon by evaporated films of sodium chloride TI - The adsorption of nitrogen and argon by evaporated films of sodium chloride UR - http://hdl.handle.net/11427/22174 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/22174
dc.identifier.vancouvercitationRodgers AL. The adsorption of nitrogen and argon by evaporated films of sodium chloride. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Chemistry, 1969 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/22174en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Chemistryen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherChemistryen_ZA
dc.titleThe adsorption of nitrogen and argon by evaporated films of sodium chlorideen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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