method of determining the main parameters of the micropore structure of activated carbons is proposed, based on Dubinin's theory of micropore filling, but using data from immersion calorimetry and water vapor adsorption at different relative pressures pips.
The use of immersion calorimetry in the determination of micropore distribution of carbons in the course of activation
✍ Scribed by F. Kraehenbuehl; H.F. Stoeckli; A. Addoun; P. Ehrburger; J.B. Donnet
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 502 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0008-6223
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✦ Synopsis
The combination of gas-solid adsorption experiments with immersion calorimetry of carbons into liquids of increasing molecular dimensions leads to accurate micropore distributions in the range 0.4-0.8 nm. This technique is used to study the development of the micropore structure during activation of carbons with CO2 or KOH.
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## It is shown that an exact expression can be derived from Dubinin's theory, for the enthalpy of immersion of active carbons. It appears that for a given liquid, the specific enthalpy of immersion is a function of the characteristic energy REo of the Dubinin-Astakhov equation. The new relation is
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