Catalyst for purifying exhaust emission from internal combustion engine, method for preparation thereof and method for purifying exhaust emission from internal combustion engine
AssigneesICT Co., Ltd., International Catalyst Technology, Inc.
InventorsTakeshi Matsumoto, Takao Kobayashi, Takuji Nakane, Takahiro Uno, Makoto Horiuchi
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Abstract
A catalyst which efficiently removes particulate matter, SOF, sulfate, and SOOT and the like from the exhaust gas from such an internal combustion engine as a diesel engine without inducing a rise in the back pressure of the engine is provided. The catalyst for the purification of the exhaust gas of an internal combustion engine is formed by using an open flow honeycomb containing in the channel walls thereof such pores as possess an average diameter in the range of 10-40 μm.
Claims24
A catalyst for the purification of an exhaust gas of an internal combustion engine, comprising an open flow honeycomb substrate having channels, wherein the walls of the channels contain pores having an average diameter in the range of 10-40 μm.
A catalyst for the purification of the exhaust gas of an internal combustion engine, having a film, comprising coarse granular protuberances of a catalytically active component and/or a heat-resistant substance, attached to an open flow honeycomb substrate having channels and preventing pores in the walls of the channels from being blocked said pores having an average diameter in the range of 10-40 μm.
Dependencies are inferred from the claim text.