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Low emission combustion and light catalyzed diesel oxidation catalyst using multicomponent metal combustion catalyst
Low emission combustion and light catalyzed diesel oxidation catalyst using multicomponent metal combustion catalyst
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机译:使用多组分金属燃烧催化剂的低排放燃烧和光催化柴油氧化催化剂
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摘要
An improved diesel operation system employs a lightly diesel oxidation catalyst (DOC), preferably with a platinum containing fuel borne catalyst (FBC) in the fuel. The DOC is at least partially lightly catalyzed with precious metal catalyst, e.g., platinum group metal, having a metal loading of from about 3 to 15 grams per cubic foot to minimize formation of NOSUB2 /SUBin the exhaust gas. Preferred fuel borne catalyst levels will be low, e.g., from 0.05 to 0.5 ppm for platinum and 3 to 8 ppm for cerium and/or iron, thereby providing effective engine out emissions reductions without discharging excessive amounts of metal catalysts or NOSUB2 /SUBto the atmosphere.
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