Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Patent
1984-02-22
1986-03-04
Carter, Herbert T.
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
423610, 423607, 423608, 423625, 423630, 423632, C01G 3102
Patent
active
045740780
ABSTRACT:
Spherical, submicronic, monodispersed, and non-agglomerated particles of metal oxides by reacting with steam a gaseous stream containing an aerosol of liquid particles of a hydrolyzable metal compound. Into a duct, in which an inert gas stream containing vapors of a hydrolyzable metal compound flows, there is fed through a nozzle a cold inert gas stream, the temperatures and flows of the two gaseous streams being such as to establish in the duct a temperature lower than the condensation temperature of the metal compound; the mixed gaseous streams having a turbulent flow in the duct, with a Reynolds number equal to or higher than 1800. At the duct outlet, the aerosol of metal compound liquid particles, which has formed in the duct, is caused to react with steam, wherefore solid particles of hydrated metal oxide form, which are subsequently calcined to the oxide.
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Cortesi Paolo
Donati Gianni
Saggese Giuseppe
Carter Herbert T.
Montedison S.p.A.
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