کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
221554 | 464260 | 2016 | 7 صفحه PDF | دانلود رایگان |
• Various kinetic rate models were implemented on NO oxidation for fast SCR process.
• Power law kinetics, LHHW kinetics and ER kinetics were employed.
• Rate equations were developed and modeled using FORTRAN routine program.
• Model parameters were analyzed (kinetically & statistically) using F-value, t-value and SSE.
Experimental data for the NO oxidation to NO2 at atmospheric pressure over Co3O4 catalyst were subjected to various kinetic rate models. The power law kinetics, Langmuir-Hinshelwood-Hougen-Watson (LHHW) kinetics, and Eley-Rideal (ER) kinetics were employed to suggest a possible reaction mechanism and a suitable kinetic rate equation. The kinetic rate equation based on the LHHW kinetics with adsorption of NO as the rate-controlling step and the kinetic rate equation based on the ER kinetics with surface reaction as the rate-limiting step were first equivalently found as the best-fit kinetic rate equations. In each case similar activation energies were resulted and that the oxygen adsorption was found inhibiting the rate of the oxidation reaction. However, the final discrimination based on the literature findings suggested the ER model as the best-fit kinetic model with activation energy of 58.3 kJ/mol and enthalpy of dissociative adsorption of oxygen as −2.10 kJ/mol.
Journal: Journal of Environmental Chemical Engineering - Volume 4, Issue 3, September 2016, Pages 2871–2877