Journal of Chemical Technology & Biotechnology · 1989 · 10 citations · 4 references
Natural SciencesChemical EngineeringChemistryCatalysisPhysical ChemistryReaction EngineeringBioprocess KineticsCatalytic MechanismsCatalytic Reaction EngineeringCatalytic Reaction KineticsCatalytic Reactor DesignSugar ProcessingActivation EnergyActivation Energy DeterminationDiffusional EffectsHeterogeneous Catalysis KineticsHeterogeneous Reaction KineticsHomogeneous KineticsHomogeneous Reaction KineticsRate Constants
Abstract The kinetics of the heterogeneous reaction between hydrogen and aqueous solutions of D ‐glucose to produce sorbitol were studied in a high pressure Parr reactor. Raney‐Ni was used as catalyst. The reaction between hydrogen and D ‐glucose was found to be very slow. In the agitated slurry reactor the diffusional aspects were completely eliminated and the reaction followed homogeneous kinetics. It was found to be first order with respect to both hydrogen and D ‐glucose. The values of the pseudo‐first‐order rate constants were found to be 1.5 × 10 −4 and 6.4 × 10 −4 s −1 at 398 and 435 K, respectively. The activation energy was found to be 64.8 kJ mol −1 .
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