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Campo Dublin Core | Valor | Idioma |
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dc.contributor.author | Robles Azocar, Patrícia Alejandra | - |
dc.contributor.author | Brandão, Bruno Bitarães Neto Salgado | - |
dc.contributor.author | Sousa, Líniker Fabrício de | - |
dc.contributor.author | Gusevskaya, Elena Vitalievna | - |
dc.date.accessioned | 2015-04-17T15:40:31Z | - |
dc.date.available | 2015-04-17T15:40:31Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | ROBLES AZOCAR, P. A. et al. Solvent-free chromium catalyzed aerobic oxidation of biomass-based alkenes as a route to valuable fragrance compounds. Applied Catalysis. A, General, v. 47, p. 20-28, 2011. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0926860X11001797>. Acesso em: 02 fev. 2015. | pt_BR |
dc.identifier.issn | 0926-860X | - |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/5133 | - |
dc.description.abstract | Chromium containing mesoporous molecular sieves MCM-41 were shown to be an efficient heterogeneous catalyst for the liquid-phase aerobic oxidation of various monoterpenic alkenes under mild solvent-free conditions. The material was prepared through a direct hydrothermal method and characterized by ICP-AES,N2 adsorption–desorption, TEM, XRD, SAXS, andH2-TPR techniques. Characterizations suggest that chromium introduced in MCM-41 is essentially incorporated in the silica framework, with no extraframework chromium oxides being detected. Various oxygenated monoterpenoids important for the flavor and fragrance industry were obtained with high combined selectivities (75–92%) at 30–40% substrate conversions. The oxidation of _-pinene led almost exclusively to allylic mono-oxygenated derivatives, whereas limonene and _-pinene gave both epoxides and allylic oxidation products. The catalyst undergoes no metal leaching and can be easily recovered and re-used. A silica-included chromium catalyst prepared through a conventional sol–gel method showed activity comparable with that of Cr- MCM-41; however, selectivity was much lower. | pt_BR |
dc.language.iso | en_US | pt_BR |
dc.subject | Monoterpenes | pt_BR |
dc.subject | Oxidation | pt_BR |
dc.subject | Oxygen | pt_BR |
dc.subject | Chromium catalysts | pt_BR |
dc.subject | Mesoporous molecular sieves | pt_BR |
dc.title | Solvent-free chromium catalyzed aerobic oxidation of biomass-based alkenes as a route to valuable fragrance compounds. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
dc.rights.license | O periódico Applied Catalysis A: General concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3581990058792. | pt_BR |
dc.identifier.doi | https://doi.org/10.1016/j.apcata.2011.03.047 | - |
Aparece nas coleções: | DEQUI - Artigos publicados em periódicos |
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