Abstract
Adsorption equilibria of the gases CH4, N2, and CO2 and their binary and ternary mixtures on activated carbon Norit R1 Extra have been measured in the pressure range 0 ≤ P ≤ 6 MPa at T = 298 K. Pure gas adsorption equilibria were measured gravimetrically. Coadsorption data of the three binary mixtures CH4/N2, CH4/CO2, and CO2/N2 were obtained by the volume-gravimetric method. Isotherms of five ternary mixtures CH4/CO2/N2 were measured using the volumetric-chromatographic method. First, we present in a short overview the method and procedure of measurement. In a second part, the measured data of pressures, surface excess amounts adsorbed and absolute amounts adsorbed are presented and analyzed. In the last part of the paper the resulting pure gas adsorption data are correlated using a generalized dual-site Langmuir isotherm. Mixture adsorption can be predicted by this model using only pure component parameters with fair accuracy. Results are presented and discussed in several tables and figures.
Similar content being viewed by others
References
Gregg, S.J. and K.S.W. Sing, Adsorption, Surface Area and Porosity, Academic Press, London, 1967.
IUPAC, Chemical Data Series: International Thermodynamic Tables of the Fluid State-3 Carbon Dioxide, Pergamon Press, Oxford, 1976.
IUPAC, Chemical Data Series: International Thermodynamic Tables of the Fluid State-5 Methane, Pergamon Press, Oxford, 1978.
IUPAC, Chemical Data Series: International Thermodynamic Tables of the Fluid State-6 Nitrogen, Pergamon Press, Oxford, 1979.
Jaeschke, M. et al. (Eds.), GERG Technical Monograph: High Accuracy Compressibility Factor Calculation for Natural Gases and Similar Mixtures by Use of a Truncated Virial Equation, Verlag des Vereins Deutscher Ingenieure, Düsseldorf, 1988.
Keller, J.U., “Equations of State of Adsorbates with Fractal Dimension,” Physica A, 166, 180–192 (1990).
Keller, J.U., R. Staudt, and M. Tomalla, “Volume-Gravimetric Measurements of Binary Gas Adsorption Equilibria,” Ber. Bunsenges. Phys. Chem., 96, 28–32 (1992).
Keller, J.U., F. Dreisbach, H. Rave, R. Staudt, and M. Tomalla, “Measurement and Correlation of Gas Mixture Adsorption Equilibria of Natural Gas Compounds on Microporous Sorbens,” Adsorption, 5, 199–215.
Keller, J.U. et al., “Generalization of Langmuir's Adsorption Isotherms to Heterogeneous Microporous Solids,” Institute of Fluid-& Thermodynamics, University of Siegen (1998), in preparation.
Li, J. and O. Talu, “Evaluation of Multicomponent Adsorption Data,” Presentation AIChE Annual Meeting, St. Louis, 1993.
Mathias, P.M. et al., “Correlation of Multicomponent Gas Adsorption by the Dual-Site Langmuir Model. Application to Nitrogen/Oxygen Adsorption on 5A-Zeolite,” Ind. Eng. Chem. Res., 35, 1477–1483 (1996).
Markham, E.C. and A.F. Benton, “The Adsorption of Gas Mixtures by Silica,” J. Am. Chem. Soc., 53, 497–507 (1931).
Myers, A.L. and J.M. Prausnitz, “Thermodynamics of Mixed Gas Adsorption,” AIChE Journal, 11, 121–127 (1965).
Myers, A.L, “Comparison of Molecular Simulation of Adsorption with Experiment,” Adsorption, 3, 107–115 (1997).
Sircar, S. and A.L. Myers, “Energy Distributions for Adsorption of Gases on Heterogeneous Surfaces,” AIChE Symp. Ser., 233, 55–61 (1984).
Staudt, R., G. Saller, M. Tomalla, and J.U. Keller, “A Note on Gravimetric of Gas Adsorption Equilibria,” Ber. Bunsenges. Phys. Chem., 97, 98–105 (1993).
Staudt, R., F. Dreisbach, and J.U. Keller, “Generalized Isotherms for Mono-and Multicomponent Adsorption,” Fundamentals of Adsorption, M.D. LeVan (Ed.), pp. 865–872, Kluwer, Boston, 1996.
Talu, O. and A.L. Myers, “Rigorous Thermodynamic Treatment of Gas Adsorption,” AIChE Journal, 34, 1887–1893 (1988).
Tomalla, M., R. Staudt, and J.U. Keller, “Determination of Binary Gas Adsorption Equilibria by Volume-Gravimetric Measurements,” Microbalance Techniques, J.U. Keller and E. Robens (Eds.), 193–204, Multi-Science, Brentwood, 1994.
Young, D.M. and A.D. Crowell, Physical Adsorption of Gases, Butterworth, London, 1962.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Dreisbach, F., Staudt, R. & Keller, J. High Pressure Adsorption Data of Methane, Nitrogen, Carbon Dioxide and their Binary and Ternary Mixtures on Activated Carbon. Adsorption 5, 215–227 (1999). https://doi.org/10.1023/A:1008914703884
Issue Date:
DOI: https://doi.org/10.1023/A:1008914703884