Showing papers by "Frank S. Stone published in 1991"
TL;DR: Theoretical methods are used to study the adsorption of linear hydrocarbons, Cl-C8, in silicalite, H-ZSM-5, and siliceous faujasite as mentioned in this paper.
Abstract: Theoretical methods are used to study the adsorption of linear hydrocarbons, Cl-C8, in silicalite, H-ZSM-5, and siliceous faujasite. The aim is to model the behavior of sorbed species in zeolites and evaluate the influence of the zeolite structure and composition on the sorption process. The method of calculation is energy minimization using the Born model of solids with specified interatomic potentials
99 citations
TL;DR: In this paper, a silica cell specially designed for low-temperature measurements of UV-visible diffuse reflectance spectra of adsorbed species has been used to study the interaction of CO with well-outgassed MgO.
15 citations
TL;DR: In this paper, the adsorption of water vapour on 773 K-outgassed γ-Al2O3, V2O5 and alumina-supported V 2O5 has been studied at 303 K. Measurements have been made incrementally in the region of sub-monolayer H2O coverage in order to map the hydrophilicity of the surface.
6 citations
TL;DR: In this paper, the initial processes whereby reactants are chemically activated for catalysis at the surfaces of ionic oxides are described, and how charge transfer behavior can be exploited and investigated for the alkaline earth oxides using ultraviolet-visible diffuse reflectance spectroscopy.
Abstract: The initial processes whereby reactants are chemically activated for catalysis at the surfaces of ionic oxides are described. It is shown how charge transfer behaviour can be exploited and investigated for the alkaline earth oxides using ultraviolet-visible diffuse reflectance spectroscopy. Heterolytic dissociative adsorption of hydrogen-containing molecules is discussed, and the activation of carbon monoxide to form anionic coupled species on MgO and CaO is taken as a detailed example to which both UV-vis and IR spectroscopy have been applied. Reference is also made to solid solutions of alkaline earth oxides with transition metal oxides and their significance for catalysis, and finally the role of basic oxides as chemically-relevant supports for metals is indicated.