https://repositorio.ufba.br/handle/ri/5486
Tipo: | Artigo de Periódico |
Título: | Activity of nanocasted oxides for gas-phase dehydration of glycerol |
Título(s) alternativo(s): | Chemical Engineering Journal |
Autor(es): | 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 |
Autor(es): | 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. |
Palavras-chave: | Nanocasted oxides Raman Glycerol Catalyst Dehydration Characterisation |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/5486 |
Data do documento: | 2011 |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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__pdn.sciencedirect.com_....0-S1385894711000805-main.pdf Restricted Access | 729,45 kB | Adobe PDF | Visualizar/Abrir Solicitar uma cópia |
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