Preparation, characterization and catalytic properties of titanium oxide nanoparticles coated with aluminum oxide.
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Data
2011
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Resumo
In the present study, TiO2 nanopowder was partially coated with Al2O3
precursors generated by a polymeric precursor method in aqueous solution. The
system of nanocoated particles formed an ultra thin structure on the TiO2 nanoparticle
surfaces, where the particle is the core and the nanocoating (additive) is the
shell. The nanocoating process led to the obtainment of nanoparticles with important
surface characteristics and catalytic behavior in the bioethanol dehydration
reaction, with improved activity and particular selectivity in comparison to their
non-coated analogs. Ethylene production was disfavored and selectivity toward
acetaldehyde, hydrogen and ethane increased with increasing Al2O3 content in the
catalysts. It is important to highlight that the TiO2–Al2O3 catalysts presented satisfactory
values of selectivity toward hydrogen, in spite of the deactivation observed
during the period of the test.
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Ethanol dehydration, Ethylene, Titania nanopowder, Nanocoating
Citação
CARREÑO, N. L. V. et al. Preparation, characterization and catalytic properties of titanium oxide nanoparticles coated with aluminum oxide. Reaction Kinetics, Mechanisms and Catalysis, v. 102, p. 75-83, 2011. Disponível em: <https://link.springer.com/article/10.1007/s11144-010-0251-6>. Acesso em: 20 abr. 2017.