Pii: S0927-7757(01)01036-6
نویسندگان
چکیده
Using inverse gas chromatography, the added to differential energy of adsorption due to lateral interactions of molecules adsorbed on a heterogeneous solid surface was determined. The method was applied to three gas/solid systems, namely, 1-butene/cadmium sulphide, ethane/calcium oxide, and trans-2-butene/marble. By plotting the dimensionless lateral interaction energy against time t in parallel with the energy distribution function against and t, the appearance of curves against t is quite similar in all three systems. This was explained on the basis of Bakaev and Steele model for adsorption sites, i.e. on the existence of three kinds of sites. © 2002 Elsevier Science B.V. All rights reserved.
منابع مشابه
Pii: S0927-7757(01)00729-4
The well-known results of the Dukhin–Shilov theory of the thin diffuse double layer polarization in low-frequency alternating fields is generalized in two directions: to include the surface conductivity of the stagnant layer and to describe a wide frequency range including both the low-frequency and the Maxwell–Wagner–O’Konski dispersions. The generalized expression obtained for the induced dip...
متن کاملPii: S0927-7757(01)00614-8
We present a consistent method for calculation of pore size distributions in nanoporous materials from adsorption and desorption isotherms, which form the hysteresis loop H1 by the IUPAC classification. The method is based on the nonlocal density functional theory (NLDFT) of capillary condensation hysteresis in cylindrical pores. It is implemented for the nitrogen and argon sorption at their bo...
متن کاملPii: S0927-7757(01)00759-2
The role of spatial distribution of porous medium patchwise chemical (charge) heterogeneity in colloid transport in packed bed columns is investigated. Colloid transport experiments with carboxyl latex particles flowing through columns packed with chemically heterogeneous sand grains were carried out. Patchwise chemical heterogeneity was introduced to the granular porous medium by modifying the...
متن کاملPii: S0927-7757(01)00612-4
Problems, which may arise when low-temperature nitrogen adsorption is used for the characterisation of porous materials, are discussed in this review. Continuous or discontinuous manometric techniques can be employed for nitrogen adsorption measurements at 77 K. For pore structure analysis, the nitrogen adsorption–desorption isotherms should be determined over the widest possible range of relat...
متن کاملInteraction, critical, percolation and kinetic glass transitions in pluronic L-64 micellar solutions
We briefly discuss results of analyses of an extensive set of small angle neutron scattering (SANS) intensity distributions from a class of Pluronic tri-block copolymer micelles in aqueous solutions. This class of Pluronic has a symmetric structure (PEOMPPONPEOM), with PPO/PEO molecular weight ratio of 60/40. It is shown that the micelles are spherical, each consisting of a hydrophobic core and...
متن کامل