Heterogeneous, composite, carbonaceous catalyst system and methods that use catalytically active gold
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United States of America Patent
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Nov 20, 2012
Grant Date -
Nov 17, 2011
app pub date -
Jun 23, 2011
filing date -
Jan 4, 2005
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Abstract
Heterogeneous catalyst systems, methods of making these systems, and methods of using these systems, wherein catalytically active gold is deposited onto composite support media. The composite support media is formed by providing nanoporous material on at least a portion of the surfaces of carbonaceous host material. In representative embodiments, relatively fine, nanoporous guest particles are coated or otherwise provided on surfaces of relatively coarser activated carbon particles. Catalytically active gold may be deposited onto one or both of the guest or host materials either before or after the guest and host materials are combined to from the composite host material. PVD is the preferred catalyst system of depositing gold.
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