CPC B22F 9/24 (2013.01) [B22F 9/04 (2013.01); C02F 1/705 (2013.01); B22F 2009/043 (2013.01); B22F 2201/10 (2013.01); B22F 2301/35 (2013.01); C02F 2101/345 (2013.01)] | 3 Claims |
1. A method for preparing a silicified zero-valent iron, comprising:
mixing a silicate and micron-sized iron powder in proportion to form a mixture; and
ball milling the mixture under an inert gas atmosphere to obtain the silicified zero-valent iron comprising a surface layer of a silicon containing oxide;
wherein the silicate comprises one of sodium silicate, potassium metasilicate, a layered crystalline sodium disilicate, a layered crystalline potassium disilicate, or a mixture of two or more thereof, and
wherein a ratio of the silicate to the micron-sized iron powder is from 0.02 to 20% based on a molar ratio of silicon to iron.
|