Enthalpy Changes of Adsorption of Tetrafluorocarbon (CF4) and Hexafluoroethane (C2F6) on Activated Carbon 


Vol. 20,  No. 1, pp. 22-27, Mar.  2014


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  Abstract

Under low pressures of CF4 and C2F6 up to 20.7 kPa, the equilibrium adsorbed quantity on activated carbon was experimentally examined using the volumetric method at various temperatures between 293.15 K and 333.15 K. To give the best fit to the experimental data curve, the two step model (i.e., Langmuir model for the first layer adsorption and then Freundlich physisorption) is suggested. The method of initial slope yielded the enthalpy of adsorption for the first step while we could apply the Clausius-Clapeyron equation to find the heat of adsorption of the second step. They are 25.9 kJ/mol and 11.8 kJ/mol, respectively, with CF4, and 38.7 and 38.2 kJ/mol with C2F6.

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  Cite this article

[IEEE Style]

S. J, S. SS, C. MK, "Enthalpy Changes of Adsorption of Tetrafluorocarbon (CF4) and Hexafluoroethane (C2F6) on Activated Carbon," Clean Technology, vol. 20, no. 1, pp. 22-27, 2014. DOI: .

[ACM Style]

Shin J, Suh SS, and Choi MK. 2014. Enthalpy Changes of Adsorption of Tetrafluorocarbon (CF4) and Hexafluoroethane (C2F6) on Activated Carbon. Clean Technology, 20, 1, (2014), 22-27. DOI: .

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