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Titania-supported Pd catalysts prepared by the modified sol-gel method are effective NO reduction catalysts with CH 4 in the presence of oxygen and water. However, they were found to partially deactivate in the presence of SO 2 . The effect of SO 2 on NO adsorption sites was investigated using in situ diffuse reflectance infrared Fourier transform spectroscopy and temperature-programmed...
Palladium and gadolinium-palladium catalysts supported on titania were studied for the catalytic reduction of NO by CH 4 . In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to identify adsorbed species under NO, NO+CH 4 , and NO+CH 4 +O 2 flows. NO adsorption resulted in formation of various nitrogen-oxo adspecies such as bridged/bidentate...
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