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Salt-saturated salt solution as a standard system for sorption calorimetry

Kocherbitov, Vitaly LU (2004) In Thermochimica Acta 421(1-2). p.105-110
Abstract
The method of sorption calorimetry allows simultaneous monitoring of water activity and the partial molar enthalpy of mixing of water. The way of calibration of sorption calorimeter affects the accuracy of the data obtained in sorption experiments. In order to improve the accuracy of the method one can use physico-chemical calibration instead of electrical calibration. The system for use in the calibration should keep its properties constant during the sorption of water, therefore a heterogeneous system can be used. The particular system suitable for this purpose is magnesium nitrate hexahydrate in equilibrium with its saturated solution. The enthalpy of dissolution of the hexahydrate in its saturated solution needed for the calibration... (More)
The method of sorption calorimetry allows simultaneous monitoring of water activity and the partial molar enthalpy of mixing of water. The way of calibration of sorption calorimeter affects the accuracy of the data obtained in sorption experiments. In order to improve the accuracy of the method one can use physico-chemical calibration instead of electrical calibration. The system for use in the calibration should keep its properties constant during the sorption of water, therefore a heterogeneous system can be used. The particular system suitable for this purpose is magnesium nitrate hexahydrate in equilibrium with its saturated solution. The enthalpy of dissolution of the hexahydrate in its saturated solution needed for the calibration has been determined by isothermal titration calorimetry at 25 and 40 degreesC. The titration results are in agreement with the calculations based on van der Waals differential equation. (C) 2004 Elsevier B.V. All rights reserved. (Less)
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Contribution to journal
publication status
published
subject
keywords
Sorption calorimetry, Calibration, Isothermal titration calorimetry, Partial molar enthalpy of mixing of water, Saturated solution, Magnesium nitrate, van der Waals differential equation
in
Thermochimica Acta
volume
421
issue
1-2
pages
105 - 110
publisher
Elsevier
external identifiers
  • wos:000224372100015
  • scopus:12344286859
ISSN
0040-6031
DOI
10.1016/j.tca.2004.04.002
language
English
LU publication?
yes
id
c4ce2ed4-7225-4f2a-a13d-b54936dfc467 (old id 153737)
date added to LUP
2007-07-11 14:37:15
date last changed
2017-01-01 06:57:38
@article{c4ce2ed4-7225-4f2a-a13d-b54936dfc467,
  abstract     = {The method of sorption calorimetry allows simultaneous monitoring of water activity and the partial molar enthalpy of mixing of water. The way of calibration of sorption calorimeter affects the accuracy of the data obtained in sorption experiments. In order to improve the accuracy of the method one can use physico-chemical calibration instead of electrical calibration. The system for use in the calibration should keep its properties constant during the sorption of water, therefore a heterogeneous system can be used. The particular system suitable for this purpose is magnesium nitrate hexahydrate in equilibrium with its saturated solution. The enthalpy of dissolution of the hexahydrate in its saturated solution needed for the calibration has been determined by isothermal titration calorimetry at 25 and 40 degreesC. The titration results are in agreement with the calculations based on van der Waals differential equation. (C) 2004 Elsevier B.V. All rights reserved.},
  author       = {Kocherbitov, Vitaly},
  issn         = {0040-6031},
  keyword      = {Sorption calorimetry,Calibration,Isothermal titration calorimetry,Partial molar enthalpy of mixing of water,Saturated solution,Magnesium nitrate,van der Waals differential equation},
  language     = {eng},
  number       = {1-2},
  pages        = {105--110},
  publisher    = {Elsevier},
  series       = {Thermochimica Acta},
  title        = {Salt-saturated salt solution as a standard system for sorption calorimetry},
  url          = {http://dx.doi.org/10.1016/j.tca.2004.04.002},
  volume       = {421},
  year         = {2004},
}