accelerated deactivation of co/al2o3 catalysts in fischer-tropsch synthesis and the effect of re and ru as the catalytic promoters are reported. 15wt% co/al2o3 catalyst and 1wt% ru and 1.4wt% re  promoted cobalt catalysts have been formulated and extensively characterized. the deactivation of the unpromoted cobalt catalyst and those promoted with re and ru were studied by accelerated method at ...

Fischer-tropsch catalysts with high activity and selectivity for olefins were produced using mordenite type SiO2/Al2O3= 12, 20, 28, 62 zeolite supported iron carbonyl compounds and were characterized by X-ray powder diffraction. The adsorptionof volatile Fe(CO)5 on the support surface was carried out under vacuum at room temperature. Reduction les...

The particle sizes and metal support interactions play a pivotal role in Fischer Tropsch synthesis. Herein, promoter-embedded Co/TiO2 mesoporous nanocomposites with high surface area were synthesized through templated assisted solvothermal method comprising highly dispersed spherical shaped Co nanoparticles on titania of less than 10 nm. Moreover, synthesis aqueous media, rather wax-slurry, is ...

Dispersed gas-liquid-solid flows are frequently encountered in a variety of industrial processes involving a.o. coating, granulation, drying and synthesis of fuels (Fischer Tropsch) and base chemicals. The dynamics of these flows is dictated by the motion of the individual phases and the complex mutual interactions and as a direct consequence thereof CFD-based modelling of these systems has pro...

Converting remote natural gas to liquid fuel is one possible solution to the problem of transporting remote gas to the energy market. However, the high investment cost of gas-to-liquid (GTL) plants prevents large scale exploitation of remote gas reserves. A lean GTL is suggested based on an autothermal reformer with enriched air as oxidant and a once-through Fischer-Tropsch synthesis. In order ...

In this concise review paper, we will address recent studies based on the generalized-gradient approximation (GGA) of the density functional theory (DFT) and on the periodic slab approach devoted to the understanding of the Fischer-Tropsch synthesis process on transition metal catalysts. As it will be seen, this computational combination arises as a very adequate strategy for the study of the r...