Calorimetric Study of the Acidity and Interface Effects of Tin Dioxide Layers Deposited on Another Metal Oxide |
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| Authors: | Sprinceana D Caldararu M Ionescu N I Auroux A |
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| Institution: | (1) Institut de Recherches sur la Catalyse, CNRS, 2 avenue Einstein, 69626 Villeurbanne Cedex, France;(2) Institute of Physical Chemistry, Spl. Independentei 202, 77208 Bucharest, Romania |
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| Abstract: | Samples with various amounts of tin oxide were prepared by impregnating γ-Al2O3, TiO2(anatase), SiO2, ZrO2 and MgO with tin tetrachloride or tributyltin acetate solutions. After drying and calcination, the samples were characterized
by chemical analysis, XRD and BET measurements. Ammonia adsorption microcalorimetry was used in order to determine the number,
strength and strength distribution of surface acid sites. The influence of the adsorption temperature, evacuation temperature,
amount of SnO2 deposited and of the nature of the support on the adsorption properties were studied.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | acid sites calorimetry surface tin dioxide |
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