Patent ID: 7708816
Filing Date: 2010-05-04
Classification: B01D,B01J,B82Y,Y10S

Abstract:
1. A filter, comprising: a filter housing having an inlet and a separate outlet; and chemically active carbon nanotubes within said filter housing, said chemically active carbon nanotubes comprising a chemically active layer formed on carbon nanotubes or comprising chemically reactive groups on sidewalls of said carbon nanotubes; wherein (i) said carbon nanotubes are arranged singly, adjacent nanotubes not touching or (ii) said carbon nanotubes are arranged in bundles, carbon nanotubes of each bundle not touching carbon nanotubes of adjacent bundles; and wherein said chemically active nanotubes or nanotubes bundles are arranged in two or more layers, chemically active nanotubes in at least two different layers of said two or more layers having different chemically active layers or different chemically reactive groups from each other.