Characterization of platinum-nickel catalysts by hydrogen-oxygen chemisorption |
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| Authors: | L Guerrero G Díaz and S Fuentes |
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| Institution: | (1) Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, 01000 DF México;(2) IBP Catálisis, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, 07730 México |
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| Abstract: | The use of hydrogen-oxygen titration method to characterize platinum-nickel supported catalysts has shown that the number of oxidized or reduced nickel layers is dependent on the atomic composition. This phenome non involves dynamic changes of the surface probably by a spillover mechanism. A surface reaction scheme based on a previous work is proposed to explain the experimental results.
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