Process for producing a nanoscale zero-valent metal

Details Process for producing a nanoscale zero-valent metal Process for producing a nanoscale zero-valent metal

B - Operations, Transporting

22

F

B22F 9/24 (2006.01) B01J 13/00 (2006.01) B22F 9/16 (2006.01) B22F 9/18 (2006.01)

Patent

CA 2527508

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.

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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