Preparation of CuO/CeO2 catalysts from metal-organic frameworks precursor for preferential CO oxidation

Employing metal-organic frameworks (MOFs) as precursors, a series of CuO/CeO2 catalysts was prepared and applied for CO-PROX(preferential oxidation of CO) in H-2-rich stream. Compared with previously reported A-600 catalyst[A-600 catalyst was.-obtained by thermal treatment of the Cu-3(BTC)(2) precursors with Ce3+ ions, the calcination temperature was selected to be 600 degrees C for removing the organic species], we can conclude that different precursors lead different catalytic activity. The X-ray diffraction, temperature-programmed reduction in H-2(H-2-TPR), transmission electron microscope and X-ray photoelectron spectroscopy analysis characterization indicated the as-synthetic catalysts presented more bulk CuO species on the surface than that of the A-600 catalyst, which resulted in the negative catalytic activity for preferential CO oxidation. But this also prevented the deactivation of catalysts in H2O and CO2 steam, indicating that the catalysts were promising in the CO-PROX process for proton exchange membrane fuel cell(PEMFC) application.