Abstract
Monolayer physical adsorption has been considered, taking into consideration the intrinsic volume of the adsorbate molecules. Since an adsorbed molecule occupies not only the site on the surface but also some of the neighboring volume, it creates steric difficulties for the adsorption of other molecules and leads to underestimation of the measured surface area. As a result, this value depends on the size of the adsorbate molecules and the apparent surface dimension can be introduced, even if the surface of narrow pores has no irregularities of atomic scale size. This effect was shown by simulation of adsorption on the surface of Menger sponge. Experimental data for measuring D-values on silica gels with different pore size distributions are in line with this effect.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S.J. Gregg, K.S.W. Sing:Adsorption, surface area and porosity, 2nd Ed. Academic Press, New York 1982.
P. Pfeifer, D.J. Avnir:Chem. Phys.,79, 3558 and 3566 (1983).
D. Avnir, P. Pfeifer:Nouv. J. Chim.,7, 71 (1983).
D. Avnir, D. Farin, P. Pfeifer:J. Colloid and Interface Sci.,103, 112 (1985).
Fractals in Physics (Eds. L. Pietronero, E. Tosatti). North-Holland, Amsterdam 1986.
The Fractal Approach to Heterogeneous Chemistry: Surfaces, Colloids, Polymers, (Ed. D. Avnir). Wiley, Chichester 1989.
G. Zimofen, A. Blumen, J. Klafter:New J. Chem.,14, 189 (1990).
H. Van Damme, P. Levitz, F. Bergaya, J.F. Alcover, L. Gatineau, J.J. Fripiat:J. Chem. Phys.,85, 616 (1986).
J.J. Fripiat, H. Van Damme:Bull. Soc. Chim. Belg.,94, 825 (1985).
J.M. Drake, P. Levitz, S. Sinha: inBetter Ceramics through Chemistry II, (Eds. C.J. Brinker, D.E. Clark, D.R. Ulrich), Proc. MRS Symposia No. 73. MRS, PA, Pittsburg 1986.
Ya. Kutsovsky, E. Paukshtis, Yu. Aristov:React. Kinet. Catal. Lett.,46, 57 (1992).
K. Gavrilov, Ya. Kutsovsky, E. Paukshtis, A. Okunev, Yu. Aristov:Mol. Cryst. Liquid Cryst.,248, 159 (1994).
D. Farin, D. Avnir:J. Am. Chem. Soc.,10, 2039 (1988).
D. Avnir, D. Farin, P. Pfeifer:New J. Chem.,16, 439 (1992).
B. Mandelbrot:The Fractal Geometry of Nature. Freeman, San Francisco 1982.
W.J. Rotshild:Cat. Rev. Sci. Eng.,33, 71 (1991).
D. Farin, A. Volpert, D. Avnir:J. Am. Chem. Soc.,107, 3368 (1985).
A.Y. Meyer, D. Farin, D. Avnir:J. Am. Chem. Soc.,108, 7897 (1986).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gavrilov, K.B., Okunev, A.G. & Aristov, Y.I. Monolayer physical adsorption in narrow pores. Apparent surface dimension. React Kinet Catal Lett 58, 39–48 (1996). https://doi.org/10.1007/BF02071103
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02071103