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

Wadsö, Ingemar LU and Wadsö, Lars LU (1997) In Journal of Thermal Analysis and Calorimetry 49(2). p.1045-1052
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
enthalpies - heats of sorption - sorption isotherms - microcalorimetry
in
Journal of Thermal Analysis and Calorimetry
volume
49
issue
2
pages
1045 - 1052
publisher
Akademiai Kiado
external identifiers
  • scopus:0030718874
ISSN
1588-2926
DOI
10.1007/BF01996792
language
English
LU publication?
yes
id
2dfc0a70-5b1e-41fd-b084-ca9bfeb40aae (old id 1034483)
date added to LUP
2008-02-19 08:49:13
date last changed
2017-01-01 04:22:14
@article{2dfc0a70-5b1e-41fd-b084-ca9bfeb40aae,
  abstract     = {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.},
  author       = {Wadsö, Ingemar and Wadsö, Lars},
  issn         = {1588-2926},
  keyword      = {enthalpies - heats of sorption - sorption isotherms - microcalorimetry},
  language     = {eng},
  number       = {2},
  pages        = {1045--1052},
  publisher    = {Akademiai Kiado},
  series       = {Journal of Thermal Analysis and Calorimetry},
  title        = {A second generation twin double microcalorimeter. Measurements of sorption isotherms, heats of sorption and sorption kinetics},
  url          = {http://dx.doi.org/10.1007/BF01996792},
  volume       = {49},
  year         = {1997},
}