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1. WO2004105984 - PROCESS FOR PRODUCING A NANOSCALE ZERO-VALENT METAL

Publication Number WO/2004/105984
Publication Date 09.12.2004
International Application No. PCT/AU2004/000695
International Filing Date 26.05.2004
IPC
B01J 13/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
13Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
B22F 9/24 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
9Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
16using chemical processes
18with reduction of metal compounds
24starting from liquid metal compounds, e.g. solutions
CPC
B01J 13/0043
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
13Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
0004Preparation of sols
0043containing elemental metal
B01J 23/745
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
70of the iron group metals or copper
74Iron group metals
745Iron
B01J 35/006
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
002Catalysts characterised by their physical properties
0046Physical properties of the active metal ingredient
006metal crystallite size
B01J 37/031
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
03Precipitation; Co-precipitation
031Precipitation
B22F 1/0551
B22F 2998/00
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
2998Supplementary information concerning processes or compositions relating to powder metallurgy
Applicants
  • CRC FOR WASTE MANAGEMENT & POLLUTION CONTROL LIMITED [AU]/[AU] (AllExceptUS)
  • FEITZ, Andrew [AU]/[AU] (UsOnly)
  • GUAN, Jing [AU]/[AU] (UsOnly)
  • WAITE, David [AU]/[AU] (UsOnly)
Inventors
  • FEITZ, Andrew
  • GUAN, Jing
  • WAITE, David
Agents
  • SHELSTON IP
Priority Data
200390270429.05.2003AU
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR PRODUCING A NANOSCALE ZERO-VALENT METAL
(FR) PROCEDE DE PRODUCTION D'UN METAL A VALENCE NULLE ET A ECHELLE NANOMETRIQUE
Abstract
(EN) This invention describes, a process for producing a nanoscale zero-valent metal, including reduction of a metal ion solution with a dithionite compound, wherein the reduction is carried out under alkaline conditions under substantially an inert atmosphere. A nanoscale zero-valent metal obtainable by this process, and having a new crystalline form, is also described. The nanoscale zero-valent metal produced by the process of the invention is preferably iron, and is advantageously used for the remediation of contaminated water.
(FR) Cette invention concerne un procédé de production d'un métal à valence nulle et à échelle nanométrique, consistant à réduire une solution ionique métallique avec un composé de dithionite, la réduction étant effectuée dans des conditions alcalines dans une atmosphère sensiblement inerte. L'invention porte aussi sur un métal à valence nulle et à échelle nanométrique pouvant être obtenu au moyen de ce procédé, et présentant une nouvelle forme cristalline. Ce métal à valence nulle et à échelle nanométrique produit par le procédé de l'invention est, de préférence, du fer, et sert avantageusement à traiter l'eau polluée.
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