Patent ID: 7802420

Claim:
A power generation system, comprising: a diesel engine operative to produce exhaust; an exhaust aftertreatment system comprising an exhaust line configured to receive at least a portion of the exhaust; a fuel reformer comprising an oxidation catalyst and a reforming catalyst configured within the exhaust line; a lean NOx trap configured within the exhaust line downstream from the fuel reformer; and a fuel injector configured to inject fuel into the exhaust line upstream from the fuel reformer; wherein the reforming catalyst comprises a catalyst washcoat comprising: a ZrO 2 refractory metal oxide support; Ln X O Y over the surface of the refractory metal oxide support in an amount at least sufficient to form about a monolayer over the refractory metal oxide support, wherein Ln is selected from the group consisting of La, Nd, and mixtures thereof; and Rh over the surface of the refractory metal oxide support in an effective amount to catalyze steam reforming at 650° C.