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- W2050107943 abstract "Supported Cu(II) polymer catalysts were used for the catalytic oxidation of phenol at 30 °C and atmospheric pressure using air and H2O2 as oxidants. Heterogenisation of homogeneous Cu(II) catalysts was achieved by adsorption of Cu(II) salts onto polymeric matrices (poly(4-vinylpyridine), Chitosan). The catalytic active sites were represented by Cu(II) ions and showed to conserve their oxidative activity in heterogeneous catalysis as well as in homogeneous systems. The catalytic deactivation was evaluated by quantifying released Cu(II) ions in solution during oxidation, from where Cu–PVP25 showed the best leaching levels no more than 5 mg L−1. Results also indicated that Cu–PVP25 had a catalytic activity (56% of phenol conversion when initial Cu(II) catalytic content was 200mgLReaction−1) comparable to that of commercial catalysts (59% of phenol conversion). Finally, the balance between activity and copper leaching was better represented by Cu–PVP25 due to the heterogeneous catalytic activity had 86% performance in the heterogeneous phase, and the rest on the homogeneous phase, while Cu–PVP2 had 59% and CuO/γ-Al2O3 68%." @default.
- W2050107943 created "2016-06-24" @default.
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- W2050107943 date "2009-04-01" @default.
- W2050107943 modified "2023-10-16" @default.
- W2050107943 title "Supported Cu(II) polymer catalysts for aqueous phenol oxidation" @default.
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- W2050107943 doi "https://doi.org/10.1016/j.jhazmat.2008.07.054" @default.
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