Production of ultrafine particles

Details Production of ultrafine particles Production of ultrafine particles

1986-03-13

1988-07-05

Brody, Christopher W.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423592, 423619, 75 05A, B22F 916, C01B 3300, C01G 5500

Patent

active

047553693

ABSTRACT:
There is provided a process for producing ultrafine particles by preparing one or more than one kind of alkoxide of a metal which is a component of the desired ultrafine particles, and subsequently hydrolyzing or heating said alkoxide. For the production of ultrafine particles of ruthenium oxide and/or metallic ruthenium, which are used as a raw material of thick film resistors, a ruthenium compound is reacted with an alkali metal alkoxide to give a ruthenium alkoxide and it is hydrolyzed or heated. For the production of a low-melting glass (including lead oxide), which is used as a sintering assistant or easy-to-sinter powder, at least three kinds of compounds (alkoxides or sols) including a lead alkoxide are reacted with one another and the resulting reaction product is hydrolyzed.

REFERENCES:
patent: 4241042 (1980-12-01), Matijevic et al.
patent: 4636248 (1987-01-01), Ogata et al.

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