Preparation of high purity berlinite

Details Preparation of high purity berlinite Preparation of high purity berlinite

1983-09-22

1984-10-23

Doll, John

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2536

Patent

active

044788053

ABSTRACT:
High purity berlinite is prepared by formation of an organoaluminum phosphate hydrogel in an organic solvent and subsequently hydrolyzing the hydrogel by reaction with water at pH less than or equal to 3.0. The berlinite is useful as a replacement for silicon-based quartz in electronic applications and in piezoelectric devices.

REFERENCES:
patent: 4324773 (1982-04-01), Chal et al.
CA50:12717d J. Papailhau, Compt. Rend., 242, 1191 (1956).
CA78:58098c; M. Tsuhako, Nippon Kagku Zasshi, 92(4), 318-22 (1971).
CA74:27559d; A. G. Kotlova, Izr. Akad. Nauk SSSR Neorg Mater, 1970, 6(11), 2075.

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