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Kinetic study of the nopol synthesis by the Prins reaction over tin impregnated MCM-41 catalyst with ethyl acetate as solvent

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col.comunidadvinculadaComunidad científica colombianaes_CO
col.contrato0572-2012es_CO
col.date.proyecto2018-01
col.programa.colcienciasProgramas de CT+I Ejecutados por Redes de Conocimientoes_CO
col.tipo.espArtículos de investigaciónes_CO
dc.audienceAdministradores de ciencia y tecnologíaes_CO
dc.audienceInvestigadoreses_CO
dc.coverage.spatialColombiaes_CO
dc.creatorCasas Orozco, Daniel
dc.creatorAlarcón Durango, Edwin Alexis
dc.creatorVilla Holguín, Aída Luz
dc.creator.corporativoBio-Red-CO-CENIVAMes_CO
dc.creator.corporativoUniversidad de Antioquia, UdeAes_CO
dc.creator.mailaida.villa@udea.edu.coes_CO
dc.date.accessioned2019-04-01T03:45:41Z
dc.date.available2019-04-01T03:45:41Z
dc.date.embargoEndinfo:eu-repo/date/embargoEnd/2024-01-31es_CO
dc.date.issued2014
dc.description.abstractThe kinetics of the catalytic synthesis of nopol from b-pinene and paraformaldehyde over Sn-MCM-41 catalyst and using ethyl acetate as solvent is presented and compared with previous studies in toluene. Reaction rate data were fitted to a kinetic expression based on the Langmuir–Hinshelwood formalism, using the initial rates method. Reaction rate constant and adsorption constants were determined by regression of experimental data. The highest adsorption constant for nopol respect to reactants (KC = 14.948 M-1) allows to explain the strong inhibition effect of this compound that is experimentally observed. Solvent effects were discussed in terms of formaldehyde solubility, solvation of activated complex and reactants, and competitive adsorption on active sites. Higher solubility of formaldehyde in ethyl acetate respect to toluene, determined with Henry’s law, along with the competitive adsorption of solvent and a more probable solvation of b-pinene and nopol may explain the better selectivity in ethyl acetate. Dependency of reaction constant on temperature was evaluated between 75°C and 90°C, resulting in an apparent activation energy of 98 kJ mol-1, which is higher than in toluene, suggesting stabilization of carbocation intermediates by solvation in the polar ethyl acetate solvent.es_CO
dc.description.isprojectnoes_CO
dc.description.projectid5507-543-31904es_CO
dc.description.projectnamePrograma: Bioprospección y desarrollo de ingredientes naturales para las industrias cosmética, farmacéutica y de productos de aseo con base en la biodiversidad colombianaes_CO
dc.description.sponsorshipDepartamento Administrativo de Ciencia, Tecnología e Innovación [CO] Colcienciases_CO
dc.formatpdfes_CO
dc.format.extent8 páginases_CO
dc.identifier.bibliographicCitationContiene 28 referencias bibliográficas. Véase documento adjuntoes_CO
dc.identifier.doi10.1016/j.fuel.2014.08.067
dc.identifier.issn0016-2361
dc.identifier.urihttp://repositorio.colciencias.gov.co/handle/11146/34181
dc.language.isoenges_CO
dc.relation.ispartofPrograma: Bioprospección y desarrollo de ingredientes naturales para las industrias cosmética, farmacéutica y de productos de aseo con base en la biodiversidad colombiana. La publicación completa está disponible en : <a href="http://repositorio.colciencias.gov.co/handle/11146/34163" target="blank">http://repositorio.colciencias.gov.co/handle/11146/34163</a>es_CO
dc.rightsinfo:eu-repo/semantics/embargoedAccesses_CO
dc.sourceFuel xxx (2014) 1-8es_CO
dc.subject.keywordNopol
dc.subject.keywordSn-MCM-41
dc.subject.keywordPrins reaction
dc.subject.keywordKinetic model
dc.subject.keywordSolvent effect
dc.subject.lembProductos químicoses_CO
dc.subject.lembBiología vegetales_CO
dc.subject.lembBiomasaes_CO
dc.subject.spinesCatalizadoreses_CO
dc.subject.spinesAceites esencialeses_CO
dc.subject.spinesAlcoholeses_CO
dc.titleKinetic study of the nopol synthesis by the Prins reaction over tin impregnated MCM-41 catalyst with ethyl acetate as solventes_CO
dc.typeArtículo científicoes_CO
dc.type.driverinfo:eu-repo/semantics/articlees_CO
dc.type.hasversioninfo:eu-repo/semantics/publishedVersiones_CO
dspace.entity.typePublication

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