Pilot scale study of Co-Fe-Ni nanocatalyst for CO hydrogenation in Fischer-Tropsch synthesis
محورهای موضوعی : Iranian Journal of Catalysis
Hamid Reza Azizi
1
(Young Researchers Club, South Tehran Branch, Islamic Azad University, Tehran, Iran.)
Ali Akbar Mirzaei
2
(Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran.)
Razieh Sarani
3
(Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran.)
Massoud Kaykhaii
4
(Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran.)
کلید واژه: Co-precipitation, Calcination, Co-Fe-Ni catalyst, Fischer&ndash, Tropsch synthesis, Heavy hydrocarbons,
چکیده مقاله :
In this work, a Co-Fe-Ni catalyst was prepared and the effect of a range of operational variables such as gas hourly space velocity (GHSV), calcination temperature, calcination time and agent on its catalytic performance for green-fuels production was investigated. By application of different characterization techniques such as XRD, BET, TGA/DSC, and SEM, it was found that these parameters have great effects on the structure, porosity, morphology and physic-chemical properties of this catalyst. The optimum conditions were found for the samples which were calcined at 550℃ in air for 6 hours, and operated at 300℃ and 4800h-1 as the reaction temperature and GHSV respectively. Results also revealed that any increase in the calcination temperature promotes the product shifting towards heavier hydrocarbons (more C5+ production). Calcination in air atmosphere was more effective than calcination in N2 atmosphere.
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