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T. D. Khokhlova
Adsorption
properties of alumina modified with stearic and oleine acids
Abstract
Two series of modified with stearic and oleine acids
alumina samples are prepared. Content of the modifiers on the alumina surface
is from 0.1 to 4 group/nm2. Dependence of adsorption of nitrogen,
water, benzene vapors and acid dye (in aqueous solution) on the modifiers
content is studied. Stearate in the sample with its maximum content (2.7
group/nm2) present dense monolayer difficult accessible for
molecules of the investigated substances. The most active adsorbent of organic
ionic substances in aqueous solutions is alumina with stearate content about
half of monolayer. The alumina with the
maximum oleate content (about 4 group/nm2) absorbed the greatest
benzene volume equivalent to three specific pore volumes of the carrier. Oleine
acid formed on the alumina surface monolayer of coupled liquid phase.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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