Phase transitions of adsorbates. I. Specific heat and dimensional changes of the porous glass-water system

Download
  1. (PDF, 609 KB)
  2. Get@NRC: Phase transitions of adsorbates. I. Specific heat and dimensional changes of the porous glass-water system (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1139/v66-394
AuthorSearch for:
TypeArticle
Journal titleCanadian Journal of Chemistry
ISSN0008-4042
Volume44
Issue22
Pages26172622; # of pages: 6
AbstractThe specific heat and dimensional changes of the porous 96% silica glass - water system were measured simultaneously between - 35°C and +2°C with coverages of 1.6, 4.0, 5.3, and 7.7 molecular layers. The specific heat of the adsorbate below the transition range was found to be higher than that of ice. No phase change was detected with the lowest concentration. At the higher coverages, transition always occurred near - 9.5° and was of the anomalous first order type. The values of the specific latent heat of fusion, calculated by assuming that two monolayers do not freeze, are 49.4, 54.4, and 55.5 cal g-1, depending on the concentration. The correlation between the results of calorimetric and dimensional change measurements was considered satisfactory.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
IdentifierDBR-RP-293
NRC number9150
2175
NPARC number20374468
Export citationExport as RIS
Report a correctionReport a correction
Record identifier55da3942-898b-4c04-b902-23d8d2ccb8df
Record created2012-07-23
Record modified2016-05-09
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)