Kinetics of Malonic Acid Degradation in Aqueous Phase over Pt/Graphite Catalyst

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dc.creatorMasende, Z. P. G.
dc.creatorKuster, B. F. M.
dc.creatorPtasinski, K. J.
dc.creatorJanssen, F. J. J. G.
dc.creatorKatima, Jamidu H. Y.
dc.creatorSchoutena, J. C.
dc.date2016-05-27T12:05:27Z
dc.date2016-05-27T12:05:27Z
dc.date2005
dc.date.accessioned2018-03-27T08:41:05Z
dc.date.available2018-03-27T08:41:05Z
dc.descriptionFull text can be accessed at http://www.sciencedirect.com/science/article/pii/S092633730400551X
dc.descriptionThis work aims at describing quantitatively the catalytic decarboxylation of malonic acid over a 5.0 wt.% Pt/graphite catalyst. The study was carried out using a slurry phase continuous flow stirred slurry reactor (CSTR) at a temperature range of 120–160 °C and at a reactor pressure of 1.8 MPa. The conversion of malonic acid during catalytic oxidation was found to proceed via decarboxylation to CO2 and acetic acid, and also oxidation to CO2 and H2O. No indication of deactivation of the platinum catalyst was observed at a maximum residual oxygen pressure in the reactor up to 150 kPa. A reaction mechanism involving elementary steps has been suggested to explain the decarboxylation and oxidation of malonic acid. A kinetic model that accounts for both non-catalysed and catalysed decarboxylation of malonic acid has been developed and validated. The non-catalysed reaction is first order in malonic acid. The activation energies and adsorption enthalpies have been determined. The model is able to describe the experimental data adequately.
dc.identifierMasende, Z.P.G., Kuster, B.F.M., Ptasinski, K.J., Janssen, F.J.J.G., Katima, J.H.Y. and Schouten, J.C., 2005. Kinetics of malonic acid degradation in aqueous phase over Pt/graphite catalyst. Applied Catalysis B: Environmental, 56(3), pp.189-199.
dc.identifier10.1016/j.apcatb.2004.09.010
dc.identifierhttp://hdl.handle.net/20.500.11810/2287
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2287
dc.languageen
dc.subjectWastewater treatment
dc.subjectMalonic acid
dc.subjectAcetic acid
dc.subjectDecarboxylation
dc.subjectKinetics
dc.subjectPlatinum catalyst
dc.subjectMultiphase reactors
dc.titleKinetics of Malonic Acid Degradation in Aqueous Phase over Pt/Graphite Catalyst
dc.typeJournal Article

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