Kinetic analysis was investigated using the deactivation kinetics model, where the reaction order of each species based on the experimental data was estimated for H 2 S removal over mesoporous Cu−Mn mixed oxide/SBA-15 and La−Mn mixed oxide/KIT-6 sorbents during hot coal gas desulfurization in a fixed-bed reactor. The reaction orders, rate constants, apparent activation energy (E a ), and deactivation energy (E d ) were calculated as the kinetic parameters. The calculated reaction orders, α, β, and γ, were 1, 1, and 1 for Cu−Mn mixed oxide/SBA-15 and 0.6, 1.2, and 1 for La−Mn mixed oxide/KIT-6. The obtained E a and E d for Cu 1 Mn 9 mixed oxide/SBA-15 were 33.02 and 46.34 kJ mol −1 and for La 3 Mn 97 mixed oxide/KIT-6 were 48.98 and 56.10 kJ mol −1 , respectively. This model offered the H 2 S breakthrough curves for the whole duration of the desulfurization reaction, with errors less than 5% between calculated and experimental data.

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In many of kinetic studies on binary component adsorption, the kinetic models for unary component adsorption were used although binary adsorption process were more complex than unary ones. We proposed a new kinetic model for multicomponent adsorption in batch systems. This model, using the deactivation kinetics model(DKM) for the noncatalytic heterogeneous reaction, is represented by a set of simultaneous ordinary differential equations, the characteristic is to calculate the concentration of adsorbates and the overall deactivation degree of the adsorbent with time together. The multicomponent adsorption kinetic model was solved with ODE function of MATLAB and the kinetic parameters were estimated by the nonlinear least squares fitting. The results of nonlinear fitting to the previous experimental data show that the proposed kinetic model can be useful for kinetics modeling of multicomponent adsorption in batch systems. <br>

No abstract

In many of kinetic studies on binary component adsorption, the kinetic models for unary component adsorption were used although binary adsorption process were more complex than unary ones. We proposed a new kinetic model for multicomponent adsorption in batch systems. This model, using the deactivation kinetics model(DKM) for the noncatalytic heterogeneous reaction, is represented by a set of simultaneous ordinary differential equations, the characteristic is to calculate the concentration of adsorbates and the overall deactivation degree of the adsorbent with time together. The multicomponent adsorption kinetic model was solved with ODE function of MATLAB and the kinetic parameters were estimated by the nonlinear least squares fitting. The results of nonlinear fitting to the previous experimental data show that the proposed kinetic model can be useful for kinetics modeling of multicomponent adsorption in batch systems. <br>