OICC Press Iranian Journal of Catalysis 2345-4865 9 3 2024 02 03 Pilot scale study of Co-Fe-Ni nanocatalyst for CO hydrogenation in Fischer-Tropsch synthesis EN Hamid Reza Azizi Young Researchers Club, South Tehran Branch, Islamic Azad University, Tehran, Iran. 0000-0003-2890-9286 Ali Akbar Mirzaei Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran. Razieh Sarani Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran. Massoud Kaykhaii Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran. Journal Article 2024 02 03 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 â„ƒ in air for 6 hours, and operated at 300 â„ƒ 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.