Characterization of Two Germania Gels of Different Coordination
- 1 February 1990
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 73 (2) , 242-244
- https://doi.org/10.1111/j.1151-2916.1990.tb06500.x
Abstract
Two germania gels were synthesized by hydrolytic condensation of germanium ethoxide and by dissolution of germanium dioxide powder in ammonium hydroxide solution. The two gels were characterized using differential scanning calorimetry, X‐ray powder diffraction, surface area and weight loss data, and infrared spectroscopy. The results indicate that, in gels, germanium is capable of tetragonal as well as hexagonal coordination, resulting in different crystallization behaviors.Keywords
This publication has 15 references indexed in Scilit:
- EXAFS study of two coordination states of Germanium in Li2O-ZnO-GeO2 glassesPhysica B: Condensed Matter, 1989
- Kinetics of crystallization of gels, gel-derived glasses, and conventional glasses in the GeO2PbO systemJournal of Non-Crystalline Solids, 1986
- A comparative Raman study of the structures of conventional and gel-derived glasses in the SiO2GeO2 systemJournal of Non-Crystalline Solids, 1985
- Homogeneity of gels and gel-derived glassesJournal of Non-Crystalline Solids, 1984
- Infrared spectra of the surface species produced by reactions of ammonia with germania gelThe Journal of Physical Chemistry, 1969
- Interactions of formic acid, formaldehyde, and methanol with germania surfacesCanadian Journal of Chemistry, 1969
- Infrared spectra of hydrogen and water on germania gel surfacesSurface Science, 1969
- Interactions of propionic and acetic acids with germaniaThe Journal of Physical Chemistry, 1968
- Infrared studies on polymorphs of silicon dioxide and germanium dioxideJournal of Research of the National Bureau of Standards, 1958
- Germanium and its Inorganic Compounds.Chemical Reviews, 1952