Author： Bandosz T.J. Lin C. Ritter J.A.
Publisher： Academic Press
ISSN： 0021-9797
Source： Journal of Colloid and Interface Science, Vol.198, Iss.2, 1998-02, pp. : 347-353
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Abstract
The structural and chemical properties of silica–alumina xerogels obtained using the sol–gel process were investigated. As methods of characterization, sorption of nitrogen, thermal analysis, and potentiometric titration were chosen. The results obtained showed a high contribution of micropores in the structure of the silica–alumina xerogels, which decreased with increasing content of aluminum. An investigation of the acidic–basic properties of the surfaces showed the presence of centers which have not been detected in commercial catalysts obtained in a more traditional way. These centers may be the result of synergy between our components and/or different coordinations between the cations.
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