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- W2042016089 abstract "The aim of this work is to characterize different (Cu and Sn)/Pd catalysts, supported on alumina, used for the catalytic removal of nitrates in natural water. The catalysts have been prepared with a Pd/(Cu or Sn) ratio of 2 but with different metal contents. Their activity and selectivity have been studied using a continuous stirred-tank reactor with nitrate polluted water from an aquifer. The catalysts have been characterized both before and after reaction by XPS, XRD, XRF, adsorption–desorption N2 isotherms at 196 °C and TEM. XPS results show changes of the Pd/Sn surface atomic ratio upon catalyst activation and after reaction and the coexistence of different oxidation states for the active metals. The studied catalysts are active, being the catalyst with the best performance that with the highest metallic dispersion and with the lowest phases segregation. The characterization of the catalysts after reaction shows that catalyst deactivation could be related with the non-reversible oxidation of the Sn–Pd couple." @default.
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- W2042016089 date "2012-05-01" @default.
- W2042016089 modified "2023-10-17" @default.
- W2042016089 title "Characterization of (Sn and Cu)/Pd catalysts for the nitrate reduction in natural water" @default.
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- W2042016089 doi "https://doi.org/10.1016/j.apcata.2012.03.015" @default.
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