Improved Low-Temperature Performance of Catalytic Converters

January 27, 2014

catalytic-2014 image1"Researchers from the University of New Mexico and Argonne National Laboratory simulated diesel oxidation catalysts with 2.5% Pd and tested in two different preparations, one with alumina only and one with La-stabilized alumina. Each catalyst was roasted to 500° C to oxidize the Pd to PdO and then cooled to room temperature. When the temperature was raised to 140° C in the presence of CO, the PdO reduced to Pd metal. Results of the experiments were analyzed by x-ray absorption spectroscopy (XAS) and diffuse reflectance Fourier transform infrared spectroscopy (DRIFTS) at the X-ray Science Division 9-BM beamline at the Argonne National Laboratory Advanced Photon Source. "

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