Kinetic Study of the Nickel Oxide Reduction by Methane
عنوان مقاله: Kinetic Study of the Nickel Oxide Reduction by Methane
شناسه ملی مقاله: ICHEC05_443
منتشر شده در پنجمین کنگره بین المللی مهندسی شیمی در سال 1386
شناسه ملی مقاله: ICHEC05_443
منتشر شده در پنجمین کنگره بین المللی مهندسی شیمی در سال 1386
مشخصات نویسندگان مقاله:
Alizadeh - Department of Chemical Engineering, Center of Petrochemical Excellency, Amirkabir University of Technology (Tehran Polytechnic), Tehran,Iran
Jamshidi - Department of Chemical Engineering, Center of Petrochemical Excellency, Amirkabir University of Technology (Tehran Polytechnic), Tehran,Iran
Ale Ebrahim - Department of Chemical Engineering, Center of Petrochemical Excellency, Amirkabir University of Technology (Tehran Polytechnic), Tehran,Iran
خلاصه مقاله:
Alizadeh - Department of Chemical Engineering, Center of Petrochemical Excellency, Amirkabir University of Technology (Tehran Polytechnic), Tehran,Iran
Jamshidi - Department of Chemical Engineering, Center of Petrochemical Excellency, Amirkabir University of Technology (Tehran Polytechnic), Tehran,Iran
Ale Ebrahim - Department of Chemical Engineering, Center of Petrochemical Excellency, Amirkabir University of Technology (Tehran Polytechnic), Tehran,Iran
Reduction of the nickel oxide, NiO, by methane was investigated in this work. The thermogravimetric technique was used for determination of kinetic parameters of the reaction. The reaction of nickel oxide with methane was carried out in the temperature range 600°C to 725°C at atmospheric pressure with porous pellets prepared from nickel oxide powder with a mean particle size of 0.026 μm. The conversion-time data have been interpreted by using the grain model. Complete conversion can be achieved in 11 minutes at 725°C, which is shorter than the time needed by carbon (about 120 minutes at 1000°C). Faster reduction in comparison with carbothermal reduction is attributed to high carbon activity in methane. For first order reaction with respect to methane concentration, the activation energy is found to be 63.9 kcal/gmole.
کلمات کلیدی: nickel oxide, reduction, methane, kinetic study
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/46293/