Synthesis of monoclinic celsian

Details Synthesis of monoclinic celsian Synthesis of monoclinic celsian

1997-12-15

2000-03-21

Bell, Mark L.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

4233301, 423331, 501125, 501128, C01B 3324, C01B 3326

Patent

active

060399295

ABSTRACT:
A process for producing monoclinic celsian comprising the steps of forming a mixture of an alkoxide of silica, an alkoxide of aluminum, and a salt of barium; adding a catalyst of a fluorine containing compound to the mixture; calcining the catalyzed mixture; and, heat treating the calcined mixture. This process uses a sol-gel process to progressively increase the amount of monoclinic phase in relation to the hexagonal celsian. Additionally, a process for producing monoclinic strontium aluminosilicate is disclosed.

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O'Bannon, Loran S. Dictionary of Ceramic Science and Engineering, p. 51, 4.
I. Lee and J. Covino, "Sol-Gel Synthesis of BaO-Al203-SiO2 Ceramic," Mat. Res. Bull., vol. 29, 55, 1994 (No Month).

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