Process for the preparation of silicon oxynitride-containing pro

Details Process for the preparation of silicon oxynitride-containing pro Process for the preparation of silicon oxynitride-containing pro

1989-09-27

1990-12-11

Dees, Carl F.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Nitrogen compound containing

502232, 423325, 501 97, B01J 2714, B01J 2108

Patent

active

049771256

ABSTRACT:
This invention relates to a process for the preparation of Si.sub.2 N.sub.2 O-containing which comprises reacting an amorphous, non-porous silicon dioxide material with flowing, ammonia-containing gas at temperatures of 950.degree.-1300.degree. C. The expression "flowing, ammonia-containing gas" refers to a large number of different gas mixtures which may contain only ammonia or one or more other gases besides ammonia, such as nitrogen, hydrogen, carbon monoxide, carbon dioxide or oxygen. Preferably, pure ammonia or ammonia mixed with the customary unconverted reaction components of the ammonia synthesis, optionally mixed with traces of carbon dioxide, carbon monoxide or oxygen, is employed.

REFERENCES:
patent: 2968530 (1961-01-01), Forgeng et al.
patent: 3639101 (1975-02-01), Washburn
patent: 4021529 (1977-05-01), Kuriakose
Synthesis of Silicon Oxynitride, Guzman et al, Research, Plenum Publishing Corp., N.Y. 10011, 1970, pp. 177-182.

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