RT Journal Article
T1 CuO/ZnO catalysts for methanol steam reforming: 												The role of the support polarity ratio and surface area
A1 Mateos-Pedrero, Cecilia
A1 Silva, Hugo
A1 Pacheco Tanaka, David A.
A1 Liguori, Simona
A1 Iulianelli, Adolfo
A1 Basile, Angelo
A1 Mendes, Adelio
A1 Ligouri, Simona
AB 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 performing catalyst, CuO/ZnOAc-375, was assessed in a Pd-composite membrane reactor and in a conventional packed-bed reactor. A hydrogen recovery of ca. 75% and a hydrogen permeate purity of more than 90% was obtained. The Pd-based membrane reactor allowed to improve the methanol conversion, by partially suppressing the methanol steam reforming backward reaction, besides upgrading the reformate hydrogen purity for use in HT-PEMFC.
SN 0926-3373
YR 2015
FD 2015-09-01
LA eng
NO Mateos-Pedrero , C , Silva , H , Pacheco Tanaka , D A , Liguori , S , Iulianelli , A , Basile , A , Mendes , A & Ligouri , S 2015 , ' CuO/ZnO catalysts for methanol steam reforming : The role of the support polarity ratio and surface area ' , Applied Catalysis B: Environmental , vol. 174-175 , pp. 67-76 . https://doi.org/10.1016/j.apcatb.2015.02.039
NO Publisher Copyright: © 2015 Elsevier B.V.
NO The authors would like to thank the European Union’s Seventh Framework Programme ( FP7/2007-2013 ) for the Fuel Cells and Hydrogen Joint Technology Initiative under grant agreement No [303476] due to the funding received for part of this work. This work was performed under the project “SYM – Produção de Metanol por Electrólise de Agua, usando Electrodos de Grafite” (ref. FCOMP-01-0202-FEDER-038899), financed by European Regional Development Fund (ERDF), through the Operational Program for Competitiveness Factors (POFC) in the National Strategic Reference Framework (NSRF), in the framework of the Incentive system for technology research and development. Dr. C. Mateos-Pedrero is grateful to the Portuguese Foundation for Science and Technology (FCT) for her Post-Doctoral Grant (Reference: SFRH/BPD/97114/2013 ). Prof. Y. Huang of Nanjing Tech-University (China) is particularly acknowledged for the preparation of Pd-composite membrane used in this work. The work of H. Silva was supported by FCT , grant SFRH/BD/45890/2008 .
DS TECNALIA Publications
RD 29 sept 2024