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https://repositorio.ufrn.br/handle/123456789/29565| Title: | Gallium-Containing Mesoporous Silica: Supported Catalysts with High Catalytic Activity for Oxidation of Benzene, Toluene and o-Xylene |
| Authors: | Pergher, Sibele Berenice Castellã Schwanke, Anderson Joel Probst, Luiz F. D. Balzer, Rosana |
| Keywords: | Gallium;Mesoporous silica;Catalytic oxidation;BTX |
| Issue Date: | 2017 |
| Publisher: | Sociedade Brasileira de Química |
| Citation: | SCHWANKE, Anderson Joel; PERGHER, Sibele B. C.; PROBST, Luiz F. D.; BALZER, Rosana. Gallium-Containing Mesoporous Silica: supported catalysts with high catalytic activity for oxidation of benzene, toluene ando-xylene. Journal Of The Brazilian Chemical Society, [s.l.], v. 28, n. 1, p. 42-48, jan. 2017. ISSN 1678-4790 versão online. Disponível em: https://www.scielo.br/scielo.php?pid=S0103-50532017000100042&script=sci_abstract&tlng=en. Acesso em: 13 jul. 2020. http://dx.doi.org/10.5935/0103-5053.20160143 |
| Portuguese Abstract: | Benzene, toluene and xylene (BTX) are a particular class of volatile organic compounds, which are highly toxic pollutants. In this study, samples of gallium-containing mesoporous silica (MS-Ga7% and MS-Ga11%) were synthesized and their catalytic activity in the oxidation of BTX was investigated. The physicochemical characterization shows that the inclusion of gallium in the mesoporous silica structure leads to an increase in the number of oxygen vacancies in the structure of the MS-Ga system, which can result in an increase in the total and surface oxygen mobility. The results show the highest conversion for benzene (65%), with > 40% for toluene and > 28% for o-xylene. The high catalytic activity observed was attributed to a combination of several factors including a higher number of active sites (gallium and gallium oxide) being exposed, with a greater mobility of the active oxygen species on the surface of the catalyst promoting the catalytic activity |
| URI: | https://repositorio.ufrn.br/jspui/handle/123456789/29565 |
| ISSN: | 0103-5053 |
| Appears in Collections: | IQ - Artigos publicados em periódicos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| SilicaSupportedCatalysts_Pergher_2017.pdf | 1,62 MB | Adobe PDF |  View/Open |
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