Fischer–Tropsch synthesis on cobalt–manganese nanocatalyst: studies on rate equations and operation conditions

International Journal of Industrial Chemistry

دوره 5، شماره 2، شهریور 2014، صفحه 93-101

نوع مقاله: research article

شناسه دیجیتال (DOI): https://doi.org/10.1007/s40090-014-0014-8

نویسندگان

Mohsen Mansouri^{* 1}؛ Hossein Atashi²؛ Farshad Farshchi Tabrizi^{1، 3}؛ Ghobad Mansouri⁴؛ Naimeh Setareshenas¹

¹Department of Chemical Engineering, University of Sistan and Baluchestan, 98164-161, Zahedan, Iran

²Department of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, 98164-161, Iran

³Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran

⁴Department of Chemistry, Payame Noor University, 19395-3697, Tehran, Iran

چکیده

In this research, an active Co–Mn/TiO₂ catalyst was prepared by co-precipitation method for synthesis of light olefins in Fischer–Tropsch synthesis. After studying the effects of using optimized operating conditions on catalyst performance, the kinetic of experimental study was performed in a differential fixed-bed micro reactor. The effect of a range of operating variables such as the pressure, temperature, and H₂/CO molar feed ratio on the catalytic performance of precipitated catalyst were investigated. It was found that the best operating conditions are H₂/CO = 2/1, T = 270 °C, and P = 3 bar. Power-law equations have been fitted with experimental data in terms of the hydrogen and carbon monoxide partial pressure for the CO conversion rate and production rates for each product. The activation energies for the carbon monoxide conversion and methane production were determined to be 30.71 and 42.37 kJ/mol, respectively.

کلیدواژه‌ها

Fischer–Tropsch synthesis؛ Fixed-bed reactor؛ Power-law equation؛ Operation conditions