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Methanol reforming by nanostructured Pd/Sm-doped ceria catalysts

Research output: Contribution to journalArticlepeer-review

Author(s)

M.R. Kosinski, A.J. Vizcaíno, L.M. Gómez-Sainero, A. Carrero, R.T. Baker

School/Research organisations

Abstract

Catalysts of 2 wt% Pd/Sm-doped Ceria (SDC) were prepared and evaluated for hydrogen production by methanol reforming. Three preparation methods were used: a one-step method in which formation of the SDC phase and Pd incorporation took place in a single citrate-complexation process (Method A); impregnation of pre-prepared SDC nanopowder supports using Pd(NO3)2 solution (Method B); and impregnation of pre-prepared SDC from H2PdCl4 solution (Method C). Both methanol conversion and hydrogen yield increased as: bare supports<<Method A < Method C < Method B, the latter achieving values of up to 97.4 % and 236.2 %, respectively. Pd was well dispersed as fine nanoparticles by Methods B and C, but larger particles were resolved for Method A. Method B resulted in a high surface concentration of Pd, further improving catalytic activity. Undesirable Cl was retained in samples of Method C. Method B resulted in catalysts with superior nanostructure, resulting in the best activity and CO2 selectivity.
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Details

Original languageEnglish
Article number119935
JournalApplied Catalysis B: Environmental
Volume286
Early online date3 Feb 2021
DOIs
Publication statusE-pub ahead of print - 3 Feb 2021

    Research areas

  • Palladium, Samarium-doped ceria, Methanol reforming, Hydrogen production, XPS

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