Patent ID: 7566680
Filing Date: 2009-07-28
Classification: B01J

Abstract:
1. A method of making a high surface area, high purity iron material, said method comprising: a) adding iron metal to water in a temperature-controlled vessel while maintaining an inert gas purge and agitation; b) combining said iron metal with an aqueous organic acid solution; c) stopping said inert gas purge and forcing an oxidative agent through said acid solution until said iron metal is consumed and an iron material slurry is formed; d) filtering said iron material slurry and retaining a first filter cake; e) adding said first filter cake to water to form a second iron material slurry; f) filtering said second iron material slurry and retaining a second filter cake; and g) air drying said second filter cake to produce a high surface area, high purity iron material having a surface area of at least 200 m