Synthesis and properties of a binary Al2O3-GeO2 system obtained by sol-gel processes -TG-TA study in oxidizing atmosphere

• Autorzy: Kirszensztejn P. , Marciniak P. , Przekop R. , Szymkowiak A. , Jurek K.
• Języki publikacji: EN

Abstrakty

EN

The paper is a continuation of our earlier studies related to the modification of the gel aluminium oxide with the oxides of the carbon group elements and aimed at the determination of the effect of the changes in the co-gelating component on the final structure of the binary support. The transformations taking place in the bulk gel have been described on the basis of the thermogravimetric studies carried out in the oxidizing atmosphere. The thermogravimetric results have confirmed that the gelation conditions proposed in this paper lead to getting a homogeneous gel structure in which germanium oxide enhances the gel network stability.

Słowa kluczowe

EN

Al2O3-GeO2 gels; TG-TA

PL

Al2O3-GeO2; żele; TG-TA

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2006
• Tom: Vol. 8, nr 2
• Strony: 118--120
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Kirszensztejn P.

autor

Marciniak P.

autor

Przekop R.

autor

Szymkowiak A.

autor

Jurek K.

• Faculty of Chemistry, A. Mickiewicz University, ul. Gnmwaldzka 6, 60-780 Poznań,

Bibliografia

• (1) McCartney D. E., Mount Prospect, Mitsche R. T.: Island Lake, I11., assignors to Universal Oil Products Company, Des Plaines, I11., Method Of Manufacturing A Germanium Catalyst, United States Patent Office # 3 790 503, Patented Feb. 5, 1974.
• (2) Brinker C. J., Scherer G. W.: in Sol-Gel Science, The Physics and Chemistry of Sol-Gel Processing, Academic Press, Inc. Harcourt Brace Jovanovich, Publisher, Boston 1990.
• (3) Wefers K., Misra C: Oxides and Hydroxides of Aluminum, Alcoa Technical Paper 1987, 19, 47.
• (4) Pacewska B., Keshr M., Kluk O.: Aluminium nitrate as a precursor of mesoporous aluminuim oxide, J. Therm. Anal. Cal, 2003, 74, 595.
• (5) Kirszensztejn P., Szymkowiak A., Marciniak P., Martyła A., Przekop R.: Texture of Al2O3-SnO2 Binary Oxides System Obtained via Sol-Gel Chemistry, Appl. Catal., A:Gen., 2003, 245, 159.
• (6) Kirszensztejn P., Szymkowiak A., Martyła A., Marciniak P., Przekop R.: Porosity of Aluminium oxide-based binary systems obtained by sol-gel method, React. Kinet. Catal. Lett., 2004, 82, 287.
• (7) Kirszensztejn P., Szymkowiak A.: J. Therm. Anal. Cal., Thermal analysis of binary system Al2O3-SnO2 obtained by sol-gel technique.Part I. Oxidative atmosphere. 2005, 81, 35.
• (8) Kirszensztejn P., Przekop R., Szymkowiak A.. Maćkowska E., Gaca J., Preparation of MgO-Al2O3 binary gel system with mesoporous structure, Micropor. Mesopor. Mater. 2006, 89, 150.