The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

A second generation twin double microcalorimeter. Measurements of sorption isotherms, heats of sorption and sorption kinetics

På svenska

Author

Summary, in English

A calorimetric method for the study of solid-vapor interactions is described. In one calorimetric chamber a vapor evaporates; in a second calorimetric chamber the vapor is absorbed by a sample. The two chambers are connected by a tube and form part of a double twin microcalorimeter. As vapor is sorbed by the sample the vapor pressure in the sorption chamber will increase from a low value to near saturation. The flow rate of the vapor is governed by diffusion through the tube between the vessels. From the thermal power measured in the vaporization calorimeter it is possible to evaluate the sorption isotherm, and using information from both calorimeters the heat of sorption may be calculated as a function of equilibrium vapor pressure. By conducting experiments with different sized samples it is also possible to study the kinetics of the sorption process. The paper describes some recent improvements of the technique and gives examples of its use.

Publishing year

1997

Language

English

Pages

1045-1052

Publication/Series

Journal of Thermal Analysis and Calorimetry

Volume

49

Issue

2

Document type

Journal article

Publisher

Akademiai Kiado

Topic

  • Physical Chemistry
  • Materials Engineering

Keywords

  • enthalpies - heats of sorption - sorption isotherms - microcalorimetry

Status

Published

ISBN/ISSN/Other

  • ISSN: 1588-2926