Please use this identifier to cite or link to this item: https://repositorio.ufba.br/handle/ri/5486
metadata.dc.type: Artigo de Periódico
Title: Activity of nanocasted oxides for gas-phase dehydration of glycerol
Other Titles: Chemical Engineering Journal
Authors: Vasconcelos, Santiago J. S.
Lima, Cleanio L.
M. Filho, Josué
Oliveira, Alcemira Conceição
Barros, Eduardo B.
Sousa, Francisco F. de
Rocha, Maria da Graça Martins Carneiro da
Bargiela, Pascal
Oliveira, Alcineia Conceição
metadata.dc.creator: Vasconcelos, Santiago J. S.
Lima, Cleanio L.
M. Filho, Josué
Oliveira, Alcemira Conceição
Barros, Eduardo B.
Sousa, Francisco F. de
Rocha, Maria da Graça Martins Carneiro da
Bargiela, Pascal
Oliveira, Alcineia Conceição
Abstract: A series of nanocasted oxides were synthesised, and an analysis using basicity measurements provided evidence that low strength basic sites with high accessibility favoured the production of 1-hydroxyacetone from glycerol dehydration. Among the oxides studied (e.g., CeO2, ZrO2, and TiO2), the best results were obtained for a CeO2–ZrO2 binary oxide (activity = 3×10−6 mmolg−1 h−1), which revealed that a moderate basicity allowed acid–base cooperativity in the Ce0.8Zr0.2O2 phase to produce 1-hydroxyacetone. Indeed, TEM, Raman, XPS and SEM-EDX analyses and textural properties showed that these features influenced the activity of the catalyst towards glycerol conversion by preventing coking.
Keywords: Nanocasted oxides
Raman
Glycerol
Catalyst
Dehydration
Characterisation
URI: http://www.repositorio.ufba.br/ri/handle/ri/5486
Issue Date: 2011
Appears in Collections:Artigo Publicado em Periódico (Química)

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