PROCESS FOR THE CONTINUOUS SYNTHESIS OF METAL OXIDE NANOPARTICLES BY HYDROTHERMAL REACTION IN A SUPERCRITICAL MEDIUM

WIPO Patent Application WO/2013/034632

A3

The invention relates to a process for the continuous synthesis of nanometre-sized inorganic particles of metal oxides by hydrothermal reaction in a supercritical medium. It comprises: a) introduction of pressurized water into an annular zone and through a first end of a reactor of essentially tubular shape comprising an external wall and an internal tube; b) heating of the water in the annular zone; c) introduction of the heated and pressurized water into the internal tube and simultaneous introduction of an aqueous and/or alcoholic solution of metallic or organometallic precursors into said internal tube at the second end of the reactor; d) mixing of the water and of the aqueous and/or alcoholic solution in a first part of the internal tube, followed by a cooling of the mixture obtained in a second part of the internal tube; and e) isobaric discharge of the cooled mixture from the reactor using the internal tube. The water and the aqueous and/or alcoholic solution travels continuously or almost continuously through the internal tube.

RUIZ JEAN-CHRISTOPHE (FR)
JOUSSOT-DUBIEN CHRISTOPHE (FR)
TURC HUBERT-ALEXANDRE (FR)
CHARTON FREDERIC (FR)
ROUBAUD ANNE (FR)

PCT/EP2012/067391

August 01, 2013

September 06, 2012

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COMMISSARIAT ENERGIE ATOMIQUE (FR)
RUIZ JEAN-CHRISTOPHE (FR)
JOUSSOT-DUBIEN CHRISTOPHE (FR)
TURC HUBERT-ALEXANDRE (FR)
CHARTON FREDERIC (FR)
ROUBAUD ANNE (FR)

B22F9/16; B01J3/00; B01J19/18; B22F1/00

US20080135496A1	2008-06-12
DE10005681A1	2001-08-16
US20070206435A1	2007-09-06

ILGART, Jean-Christophe (95 rue d'Amsterdam, Paris Cedex 8, FR)

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