US Patent 7955570 - Nanoporous particles using catalytically active gold

http://www.freepatentsonline.com/7955570.html


This patent from 3M teaches a gold nanocatalyst system useful for the conversion of carbon monoxide to carbon dioxide with low pressure drop reaction. Claim 1 reads:

1. A catalyst system, comprising:

a) a fluid conduit having an inner surface defining at least a portion of a flow-through channel; and

b) a plurality of nanoporous particles provided on at least a portion of the inner surface,

wherein a catalyst is provided on the particles, the catalyst comprising a plurality of gold clusters having a size in the range of about 0.5 nm to about 50 nm.