Publication:
Kinetics of depolymerization of paraformaldehyde obtained by thermogravimetric analysis

Simple item page
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.creatorVilla Holguín, Aída Luz
dc.creatorAlarcón Durango, Edwin Alexis
dc.creatorGrajales, Edwing J.
dc.creator.corporativoBio-Red-CO-CENIVAMes_CO
dc.creator.corporativoUniversidad de Antioquia, UdeAes_CO
dc.creator.mailedwin.alarcon@udea.edu.coes_CO
dc.date.accessioned2019-04-01T03:48:57Z
dc.date.available2019-04-01T03:48:57Z
dc.date.embargoEndinfo:eu-repo/date/embargoEnd/2024-01-31es_CO
dc.date.issued2015-04
dc.description.abstractSolid paraformaldehyde is a source of formaldehyde that is preferred when anhydrous conditions in chemical processes are required. In this contribution, several depolymerization models were proposed for paraformaldehyde in powder (PFP) and prills (PFS), and they were validated with experimental thermogravimetric analysis (TGA). For description of PFP depolymerization, a model of a single step was adequate, and for PFS the best model included two simultaneous mechanisms. Kinetic models were determined using Master Plot method; for PFS, small intervals of conversion were used in order to obtain the best model at each finite point of the progress of reaction. Apparent activation energies (Ea) were obtained by isoconversional methods. For PFP, Ea was 31.7 kJ mol-1 and the model corresponded to Avrami-Erofeyev 2 (A2). For PFS decomposition, the activation energy of the two mechanisms was Ea = 105.4 kJ mol-1 for a contracting volume (R3) model and Ea = 48.4 kJ mol-1 for the Avrami-Erofeyev model.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.extent12 páginases_CO
dc.identifier.bibliographicCitationContiene 56 referencias bibliográficas. Véase documento adjuntoes_CO
dc.identifier.doi10.1016/j.tca.2015.04.016
dc.identifier.issn0040-6031
dc.identifier.urihttp://repositorio.colciencias.gov.co/handle/11146/34182
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.sourceThermochimica Acta 609 (2015) 49–60es_CO
dc.subject.keywordParaformaldehyde depolymerization
dc.subject.keywordThermogravimetrical analysis
dc.subject.keywordIsoconversional method
dc.subject.keywordActivation energy
dc.subject.keywordMaster Plot
dc.subject.keywordKinetic model
dc.subject.lembProductos químicoses_CO
dc.subject.lembBiología vegetales_CO
dc.subject.spinesAlcoholeses_CO
dc.subject.spinesAceites esencialeses_CO
dc.subject.spinesBiomasaes_CO
dc.subject.spinesBiología vegetales_CO
dc.subject.spinesTecnología químicaes_CO
dc.titleKinetics of depolymerization of paraformaldehyde obtained by thermogravimetric analysises_CO
dc.typeArtículo científicoes_CO
dc.type.driverinfo:eu-repo/semantics/articlees_CO
dc.type.hasversioninfo:eu-repo/semantics/publishedVersiones_CO
dspace.entity.typePublication

Files

Collections

Informes Finales