Molecular cage occupancy of clathrate hydrates at infinite dilution: Experimental determination and thermodynamic significance

Download
  1. (PDF, 379 KB)
  2. Get@NRC: Molecular cage occupancy of clathrate hydrates at infinite dilution: Experimental determination and thermodynamic significance (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1021/jp909982n
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleThe Journal of Physical Chemistry
Volume114
Issue2
Pages804808; # of pages: 5
AbstractThis study focuses on the cage occupancy of guest molecules in the infinitely dilute state. At the extreme conditions of highly diluted guest concentrations the direct measurements of the cage occupancy ratio representing the competitive inclusion of multiguest species appear to be so difficult because of spectroscopic intensity limitation, but its thermodynamic significance might be considerable due to the fact that the infinite-dilution value of the cage occupancy ratio can provide the valuable thermodynamic information as a very unique and guest-specific parameter. To experimentally identify gaseous guest populations in structure I (sI) and structure II (sII) cages, we used the solid-state nuclear magnetic resonance (NMR), gas chromatography, and direct gas measurements. Furthermore, we derived the simple and generalized thermodynamic equation related to cage occupancies at infinite dilution from the van der Waals−Platteeuw model. Both experimental and predicted values agree well within the experimental error range.
Publication date
LanguageEnglish
AffiliationNRC Steacie Institute for Molecular Sciences; National Research Council Canada
Peer reviewedYes
NPARC number17673450
Export citationExport as RIS
Report a correctionReport a correction
Record identifier615792db-4288-410e-bddc-e1c7fb80c158
Record created2011-04-01
Record modified2017-03-23
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)