A comparative study of LHHW and ER kinetic models for NO oxidation over Co3O4 catalyst

Rabya Aslam, Muhammad R. Usman, Muhammad F. Irfan*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

9 اقتباسات (Scopus)

ملخص

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.

اللغة الأصليةEnglish
الصفحات (من إلى)2871-2877
عدد الصفحات7
دوريةJournal of Environmental Chemical Engineering
مستوى الصوت4
رقم الإصدار3
المعرِّفات الرقمية للأشياء
حالة النشرPublished - سبتمبر 1 2016

ASJC Scopus subject areas

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