Nano powder synthesis using hydrophilic organic media

Details Nano powder synthesis using hydrophilic organic media Nano powder synthesis using hydrophilic organic media

C - Chemistry, Metallurgy

04

B

C04B 35/624 (2006.01) C01B 13/18 (2006.01) C01G 25/02 (2006.01) C04B 38/06 (2006.01)

Patent

CA 2190280

A process for producing nano size powders comprising the steps of mixing an aqueous continuous phase comprising at least one metal cation salt with a hydrophilic organic polymeric disperse phase, forming a metal cation saltpolymer gel, and heat treating the gel at a temperature sufficient to drive off water and organics within the gel, leaving as a residue a nanometer particle-size power.

Procédé d'élaboration de poudres à structure de l'ordre du nanomètre, prévoyant les étapes consistant à mélanger une phase aqueuse continue renfermant au moins un sel contenant un cation métallique avec une phase de dispersion polymère organique hydrophile, à réaliser un gel polymère/sel contenant un cation métallique et à soumettre ce gel à un traitement thermique à une température suffisante pour chasser l'eau et les matières organiques à l'intérieur du gel, pour obtenir comme résidu une poudre à structure particulaire de l'ordre du nanomètre.

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