Catalytic wet-air oxidation of lignin in a three-phase reactor with aromatic aldehyde production

dc.creatorSales, F.G.
dc.creatorAbreu, C. A. M.
dc.creatorPereira, J. A. F. R.
dc.date2004-06-01
dc.date2014-07-17T17:37:49Z
dc.date2015-11-26T11:45:23Z
dc.date2014-07-17T17:37:49Z
dc.date2015-11-26T11:45:23Z
dc.date.accessioned2018-03-28T20:49:08Z
dc.date.available2018-03-28T20:49:08Z
dc.identifierBrazilian Journal of Chemical Engineering. Brazilian Society of Chemical Engineering, v. 21, n. 2, p. 211-218, 2004.
dc.identifier0104-6632
dc.identifierS0104-66322004000200010
dc.identifier10.1590/S0104-66322004000200010
dc.identifierhttp://dx.doi.org/10.1590/S0104-66322004000200010
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322004000200010
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/26115
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/26115
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1235845
dc.descriptionIn the present work a process of catalytic wet air oxidation of lignin obtained from sugar-cane bagasse is developed with the objective of producing vanillin, syringaldehyde and p-hydroxybenzaldehyde in a continuous regime. Palladium supported on g-alumina was used as the catalyst. The reactions in the lignin degradation and aldehyde production were described by a kinetic model as a system of complex parallel and series reactions, in which pseudo-first-order steps are found. For the purpose of producing aromatic aldehydes in continuous regime, a three-phase fluidized reactor was built, and it was operated using atmospheric air as the oxidizer. The best yield in aromatic aldehydes was of 12%. The experimental results were compatible with those values obtained by the pseudo-heterogeneous axial dispersion model (PHADM) applied to the liquid phase.
dc.description211
dc.description218
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherBrazilian Society of Chemical Engineering
dc.relationBrazilian Journal of Chemical Engineering
dc.rightsaberto
dc.sourceSciELO
dc.subjectcatalytic wet air-oxidation
dc.subjectlignin
dc.subjectvanillin
dc.subjectsyringaldehyde p-hydroxybenzaldehyde
dc.subjectpalladium catalyst
dc.subjectthree-phase fluidized-bed reactor
dc.titleCatalytic wet-air oxidation of lignin in a three-phase reactor with aromatic aldehyde production
dc.typeArtículos de revistas


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