Ethanol steam reforming
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2019
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Journal of Materials Science
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We reported herein a systematic investigation on how the nature of the support
affected the catalytic performances of Rh nanoparticles. The prepared catalysts
were denoted as Rh/MxOy, where M corresponded to Ce, Ti, Si, Zn, and Al, and
Rh was Rh3+ reduction to Rh nanoparticles on the surface of oxides. This
strategy was performed in a single step using urea as a mediator and in the
absence of any other stabilizer or capping agent. The Rh nanoparticles displayed
relatively similar sizes, shapes, and uniform distribution over the supports,
differing only in terms of the nature of the support. This strongly affected the
metal–support interaction between Rh nanoparticles and the respective oxides,
leading to significant differences in their catalytic performances toward the
ethanol steam reforming. Here, not only the catalytic activity (in terms of
ethanol conversion) was affected, but both the selectivity and stability were also
influenced by the nature of the oxide support. Interestingly, the reaction paths as
well as the deactivation profile were completely changed as function of the
employed support. Such differences were associated with differences in the
oxygen storage, oxygen mobility, and acidity/basicity of the supports. We
believe that our results can contribute to the development and understanding of
Rh-supported catalysts for the applications toward gas-phase transformations
such as the ethanol steam reforming reaction.
Como referenciar
RODRIGUES, THENNER S.; SILVA, FELIPE A. e; CANDIDO, EDUARDO G.; SILVA, ANDERSON G.M. da; GEONMONOND, RAFAEL dos S.; CAMARGO, PEDRO H.C.; LINARDI, MARCELO; FONSECA, FABIO C. Ethanol steam reforming: understanding changes in the activity and stability of Rh/MxOy catalysts as function of the support. Journal of Materials Science, v. 54, n. 17, p. 11400-11416, 2019. DOI: 10.1007/s10853-019-03660-z. Disponível em: http://repositorio.ipen.br/handle/123456789/29891. Acesso em: 14 May 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.