Low-Temperature Diesel Oxidation Catalysts Using TiO2 Nanowire Arrays Integrated on a Monolithic Substrate
AssigneeUniversity of Connecticut
InventorsPu-Xian Gao, Son Hoang
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Abstract
Metal oxide nanoarrays, such as titanium oxide nanoarrays, having a platinum group metal dispersed thereon and methods of making such nanoarrays are described. The platinum group metal can be dispersed on the metal oxide nanoarray as single atoms. The nanoarrays can be used to catalyze oxidation of combustion exhaust.
Claims21
1-50. (canceled)
A device for providing catalytic oxidation of gases within an exhaust, the device comprising:
- a monolithic substrate comprising a plurality of surfaces arranged to provide a plurality of passageways that permit a flow of the exhaust therethrough, each of the surfaces comprising a nanoarray of nanowires protruding therefrom and into a respective one of the passageways;
- and
- a material providing catalytic activity dispersed into the substrate and the nanoarrays.
A method of making a device for providing catalytic oxidation of gases within an exhaust, the method comprising:
- selecting a monolithic substrate comprising a plurality of surfaces arranged to provide a plurality of passageways that permit a flow of the exhaust therethrough,
- disposing upon each of the surfaces a nanoarray of nanowires protruding therefrom;
- and
- dispersing a material providing catalytic activity into the substrate and the nanowires.
A catalytic converter for providing catalytic oxidation of gases within an exhaust, the device comprising:
- an inlet for receiving the exhaust and directing the exhaust into a catalytic device;
- the catalytic device comprising a monolithic substrate comprising a plurality of surfaces arranged to provide a plurality of passageways that permit a flow of the exhaust therethrough, each of the surfaces comprising a nanoarray of nanowires protruding therefrom and into a respective one of the passageways;
- and a material providing catalytic activity dispersed into the substrate and the nanoarrays;
- and,
- an outlet for releasing exhaust from the catalytic device.
Dependencies are inferred from the claim text.