Method of preparing monoclinic BaO.A1.sub.2 O.sub.3.2SiO.sub.2

Details Method of preparing monoclinic BaO.A1.sub.2 O.sub.3.2SiO.sub.2 Method of preparing monoclinic BaO.A1.sub.2 O.sub.3.2SiO.sub.2

1989-07-18

1997-12-09

Nelson, Peter A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423155, 4233271, 4233281, 423331, 501 8, C01F 100, C01B 3326

Patent

active

056957254

ABSTRACT:
Monoclinic celsian (BaO.Al.sub.2 O.sub.3.2SiO.sub.2) is produced by heating a stoichiometric, powder mixture of BaCO.sub.3 (or BaC.sub.2 O.sub.4), Al.sub.2 O.sub.3, and SiO.sub.2 (preferably SiO.sub.2 gel) with monoclinic celsian seeds at from 1250.degree. C. to 1500.degree. C.

REFERENCES:
patent: 3953220 (1976-04-01), Miller
patent: 3985532 (1976-10-01), Grossman
patent: 4018614 (1977-04-01), Nordlie
patent: 4360567 (1982-11-01), Guillevic
patent: 4687749 (1987-08-01), Beall

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