The kinetic of Fischer-Tropsch synthesis over a co-precipitated Fe-Ce catalyst was investigated in a fixed bed micro reactor. Experimental conditions were varied as follow: reaction pressure 1-15bar, H¬¬¬2/CO feed ratio of 1-3 and space velocity of 3600-5400 h-1 at the temperature range of 270-310°C. 4 models according to the Langmuir-Hinshelwood-Hougen-Watson (LHHW) type rate equation were der...

In this study, the effect of preparation technique of carbon nanotube (CNT)-supported cobalt catalysts on the activity and selectivity of Fischer-Tropsch synthesis (FTS) was studied. Different concentrations of acetic acid were used for the pretreatment of the catalyst support to modify the surface properties of CNT. This modification improved the reduction degree and dispersion of supported co...

Nano-structure of Co–Mn spinel oxide was prepared by thermal decomposition method using [Co(NH3)4CO3]MnO4 as the precursor. The properties of the synthesized material were characterized by X-Ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), Transmission Electron Microscopy (TEM), surface area measurements, Energy-Dispersive X-ray (EDX) spectroscopy analys...

Context. How simple organic matter appeared on Earth and the processes by which it transformed into more evolved compounds, ultimately led to emergence of life, is still an open topic. Different scenarios have been proposed, main one assumes that compounds were synthesized, either in gas phase or surfaces dust grains, during process star formation they incorporated larger bodies protoplanetary ...

Fischer-Tropsch synthesis with a commercial cobalt catalyst (Albemarle) has been carried out under various combinations of two process parameters, viz. reaction pressure and GHSV (gas hourly space velocity) using synthesis gas with molar ratio of H2/CO = 2. The optimum set of reaction parameters that yielded hydrocarbon product in the desired carbon number range of C10-C14 and chain growth prob...

Although Fe-based catalysts have made significant progress in Fischer–Tropsch synthesis, the effect of residual sodium on structural properties and catalytic performance has been controversial. Herein, we report positive role FeAlNa for olefins synthesis from syngas. Meanwhile, as-prepared were characterized by multiple characterization technique to reveal properties. The results revealed that ...