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Characterization of Two Germania Gels of Different Coordination
Author(s) -
Mukherjee Shyama P.
Publication year - 1990
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1990.tb06500.x
Subject(s) - differential scanning calorimetry , germanium , ammonium hydroxide , dissolution , crystallization , tetragonal crystal system , powder diffraction , materials science , infrared spectroscopy , characterization (materials science) , chemical engineering , chemistry , crystallography , inorganic chemistry , nanotechnology , crystal structure , organic chemistry , silicon , metallurgy , physics , engineering , thermodynamics
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.