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- W2056579233 abstract "<TEX>$CF_4$</TEX>와 <TEX>$C_2F_6$</TEX>의 압력이 20.7 kPa 이하일 경우, 활성탄에의 평형흡착량을 여러 온도(293.15-333.15 K)에서 실험적으로 조사하였다. 실험데이터가 가장 잘 맞을 수 있도록 1차층 흡착으로 Langmuir모델을 쓰고 그 다음 단계에는 Freundlich 물리흡착을 이용하는 이단계모델을 제안한다. 1단계에 대한 흡착엔탈피를 구하기 위해 실험데이터의 최초기울기를 이용하였고, Clausius-Clapeyron식을 사용함으로써 2단계에 대한 흡착엔탈피를 구하였다. <TEX>$CF_4$</TEX>의 경우 1, 2단계의 흡착엔탈피는 각각 25.9와 11.8 kJ/mol이고, <TEX>$C_2F_6$</TEX>의 경우는 38.7과 38.2 kJ/mol이다. Under low pressures of <TEX>$CF_4$</TEX> and <TEX>$C_2F_6$</TEX> 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 <TEX>$CF_4$</TEX>, and 38.7 and 38.2 kJ/mol with <TEX>$C_2F_6$</TEX>." @default.
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- W2056579233 date "2014-03-31" @default.
- W2056579233 modified "2023-10-02" @default.
- W2056579233 title "Enthalpy Changes of Adsorption of Tetrafluorocarbon (CF4) and Hexafluoroethane (C2F6) on Activated Carbon" @default.
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- W2056579233 doi "https://doi.org/10.7464/ksct.2014.20.1.022" @default.
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