Commissariat a L'energie Atomique

St&eacute;phane Sarrade

Luc Schrive

Christian Perre

Anne Julbe

Christian Guizard

This invention relates to a method of manufacturing a product based on a simple or mixed metal oxide, or silicon oxide, from a charge of one or more precursors comprising one or more organic precursors. These oxides can be, for example, oxides of Ti, Al, Mg, Th, Si, Ba, Bc or Zr etc. The method comprises bringing the charge of organo-metallic precursors into contact with a reaction medium that comprises supercritical C0 , at a temperature of from 31 to 100&deg; C. and a supercritical pressure of from 3&times;10 to 5&times;10 Pa, in order to form from the precursor, a product based on a simple or mixed metal oxide, or silicon oxide, from the reaction medium by reducing the pressure of the supercritical C0 to a pressure lower than the supercritical pressure.

Method for making single or mixed metal oxides or silicon oxide

The invention relates to a method of tangential filtration of a viscous fluid or liquid in which a supercritical substance is dissolved in a supercritical state in this viscous fluid or liquid so as to lower the viscosity. The invention also relates to the installation for the implementation of the method. The invention is applicable particularly to the filtration of heat sensitive organic liquids and used motor oils.

Growing community of inventors

Montpellier, France

Stéphane Sarrade

Growing community of inventors

Montpellier, France

St&eacute;phane Sarrade

Stéphane Sarrade