Abstract
The adsorption of alcohol and the alkoxylation reaction on a silica surface were studied in solution systems. The over-all adsorption equilibria are expressed by the composite adsorption isotherms, which can show the influence of the kind of particles and solvents. The volume-filling model can be successfully applied to determine the individual isotherms. The surface alkoxylation reaction in benzene solutions was studied in comparison with that in aqueous solutions. The number of the formed alkoxyl groups was measured against the equilibrium concentration in a solution containing silica particles. In this paper, the expression of equilibrium constant is discussed, and the values are reported for various systems. The equilibrium constant for methanol is much larger than for other alcohols both in aqueous and benzene solutions.
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