Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory
Data of water desorption on different food products were analysed from the point of view of the BET theory. A plot of log C against 1/T as used for the independent evaluation of E1‐EL and the pre‐exponential a1b2/b1a2, in the expression for the constant C of the BET theory. It was found that a1b2/b1...
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todo:paper_09505423_v19_n3_p325_AGUERRE2023-10-03T15:50:13Z Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory AGUERRE, R.J. SUÁREZ, C. VIOLLAZ, P.E. Data of water desorption on different food products were analysed from the point of view of the BET theory. A plot of log C against 1/T as used for the independent evaluation of E1‐EL and the pre‐exponential a1b2/b1a2, in the expression for the constant C of the BET theory. It was found that a1b2/b1a2, may range from 10−3 to 10−6 and the E1 ‐ EL values are correspondingly much higher than usual. An equation has been obtained within the framework of the BET theory for the dependence of the net heat of desorption on moisture content. In the present analysis the variation of the monolayer value with temperature is considered by means of a simple empirical equation. The results are compared with the heats of desorption calculated directly by the Clausius‐Clapeyron equation. Copyright © 1984, Wiley Blackwell. All rights reserved Fil:AGUERRE, R.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09505423_v19_n3_p325_AGUERRE |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Data of water desorption on different food products were analysed from the point of view of the BET theory. A plot of log C against 1/T as used for the independent evaluation of E1‐EL and the pre‐exponential a1b2/b1a2, in the expression for the constant C of the BET theory. It was found that a1b2/b1a2, may range from 10−3 to 10−6 and the E1 ‐ EL values are correspondingly much higher than usual. An equation has been obtained within the framework of the BET theory for the dependence of the net heat of desorption on moisture content. In the present analysis the variation of the monolayer value with temperature is considered by means of a simple empirical equation. The results are compared with the heats of desorption calculated directly by the Clausius‐Clapeyron equation. Copyright © 1984, Wiley Blackwell. All rights reserved |
| format |
JOUR |
| author |
AGUERRE, R.J. SUÁREZ, C. VIOLLAZ, P.E. |
| spellingShingle |
AGUERRE, R.J. SUÁREZ, C. VIOLLAZ, P.E. Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory |
| author_facet |
AGUERRE, R.J. SUÁREZ, C. VIOLLAZ, P.E. |
| author_sort |
AGUERRE, R.J. |
| title |
Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory |
| title_short |
Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory |
| title_full |
Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory |
| title_fullStr |
Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory |
| title_full_unstemmed |
Calculation of the variation of the heat of desorption with moisture content on the basis of the BET theory |
| title_sort |
calculation of the variation of the heat of desorption with moisture content on the basis of the bet theory |
| url |
http://hdl.handle.net/20.500.12110/paper_09505423_v19_n3_p325_AGUERRE |
| work_keys_str_mv |
AT aguerrerj calculationofthevariationoftheheatofdesorptionwithmoisturecontentonthebasisofthebettheory AT suarezc calculationofthevariationoftheheatofdesorptionwithmoisturecontentonthebasisofthebettheory AT viollazpe calculationofthevariationoftheheatofdesorptionwithmoisturecontentonthebasisofthebettheory |
| _version_ |
1782030711270670336 |