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Prediction of the fixed-bed reactor behaviour using dispersion and plug-flow models with different kinetics for immobilised enzyme
(Elsevier Science Sa, 2003-05)
The behaviour of fixed-bed reactors, which have an immobilised enzyme on the packing surface, was studied considering steady-state conditions and external mass transfer resistance in the fluid around catalyst spherical ...
Estimation of effectiveness factor for arbitrary particle shape and non-linear kinetics
(American Chemical Society, 2008-09-25)
A one-dimensional model, called generalized cylinder (GC), is employed to analyze the diffusion-reaction problem in catalytic pellets of different shapes and nonlinear kinetics. The fitting parameter (ó) of the GC model ...
Overall effectiveness factor for slab geometry in a three-phase reaction system
(De Gruyter, 2014-01)
The overall effectiveness factor for slab geometry applicable to uniform washcoats on a monolith surface for three-phase reaction systems was studied in the present work. Analytical solutions for zero-order reactions and ...
Influence of Ag additions on the activation energy for the reverse eutectoid reaction in Cu-Al alloys
(Springer, 2011-11-01)
The eutectoid transformation may be defined as a solid-state diffusion-controlled decomposition process of a high-temperature phase into a two-phase lamellar aggregate behind a migrating boundary on cooling below the ...
Sustainable Biodiesel: Kinetic Study and Modeling of Catalytic Esterification of Used Vegetable Oils as The First Stage of the Production Process
(Asociación Química Argentina, 2017-04)
In an attempt to satisfy the needs for sustainable production of biofuel in industrial processes, thepresent work develops the esterification kinetics of used vegetable oils (UVOs) with ethanol,employing acidified sunflower ...
Tropospheric degradation of 2,2,2 trifluoroethyl butyrate: Kinetic study of their reactions with OH radicals and Cl atoms at 298 K
(Elsevier Science, 2013-06)
Rate coefficients of the reactions of OH radicals and Cl atoms with 2,2,2 trifluoroethyl butyrate have been determined at 298 K and atmospheric pressure. The decay of the organics was followed using a gas chromatograph ...
A Reaction Kinetic Model for Ozone Decomposition in Aqueous Media valid for Neutral and Acidic pH
(Elsevier Science Sa, 2009-12)
A kinetic scheme for ozone decomposition in aqueous media has been developed. It can be applied for an extended range of pHs from acidic to neutral operating conditions. All experiments were made in a homogeneous medium ...
Photocatalytic Reactors. Reaction Kinetics In A Flat Plate Solar Simulator
(Elsevier Science, 2002-02)
The kinetics of the photocatalytic decomposition of low concentrations of trichloroethylene (TCE) in water was modeled and the reaction parameters have been evaluated for different catalyst loadings. The employed reactor ...
Hydrogen Evolution Reaction on Nanostructures Electrodes—a Scenario on Stepped Silver Surfaces
(Springer New York LLC, 2017-11)
We have investigated the scenario for the hydrogen evolution reaction at stepped silver surfaces in acid solutions at high overpotentials using a simple kinetic model. Two independent types of sites, at the steps and at ...