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    CuO/ZnO catalysts for methanol steam reforming: The role of the support polarity ratio and surface area

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    URI: http://hdl.handle.net/11556/203
    ISSN: 0926-3373
    DOI: 10.1016/j.apcatb.2015.02.039
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    Author/s
    Mateos-Pedrero, Cecilia; Silva, Hugo; Pacheco Tanaka, David A.; Ligouri, Simona; Iulianelli, Adolfo; [et al.]
    Date
    2015-09
    Keywords
    CuO/ZnO catalysts
    Methanol steam reforming
    Pd membrane
    Abstract
    The effect of surface area and polarity ratio of ZnO support on the catalytic properties of CuO/ZnO catalyst for methanol steam reforming (MSR) are studied. The surface area of ZnO was varied changing the calcination temperature and its polarity ratio was modified using different Zn precursors, zinc acetate and zinc nitrate. It was found that the copper dispersion and copper surface area increase with the surface area of the ZnO support and the polarity ratio of ZnO strongly influences the reducibility of copper species. A higher polarity ratio promotes the reducibility, which is attributed to a strong interaction between copper and the more polar ZnO support. Interestingly, it was observed that the selectivity of CuO/ZnO catalysts (lower CO yield) increases with the polarity ratio of ZnO carriers. As another key result, CuO/ZnOAc375 catalyst has proven to be more selective (up to 90 %) than a reference CuO/ZnO/Al2O3 sample (G66-MR, Süd Chemie). The activity of the best ...
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