Bimetallic catalysts play important roles in chemical transformation and energy conversion processes. Bimetallic nanocatalysts such as Pd-Zn and Ni-Ga with a single phase were prepared. Catalytic performances of Pd-Zn and Ni-Ga catalysts with different compositions for production of hydrogen from methanol were measured. A composition-dependent catalytic selectivity was revealed in these alloy catalysts. Operando studies identified their active surface composition at different reaction conditions. A correlation between surface chemistries and their catalytic performances was built. In addition, CO oxidation on Pd-Cu and Pt-Cu nanocatalysts with well controlled composition and structure were studied. Operando studies of surface composition of different Pd-Cu and Pt-Cu catalysts shows that tuning surface composition can optimize catalytic performances in CO oxidation.

Operando and in-situ studies of bimetallic catalysts

245th National Meeting (2013)

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