Kinetic estimation of Fischer-Tropsch synthesis using biogas-derived feedstocks over Ni/Al2O3 catalyst

In this study, the kinetics of the Fischer-Tropsch process synthesis (also known as FTS) was investigated using feedstocks produced from biogas. For the kinetic testing, a differential fixed-bed reactor was utilized to operate the Ni/Al2O2 catalyst produced using precipitation procedures. Experiments were carried out with a variety of settings for the working circumstances, such as reaction temperatures ranging from 543 to 563 degrees K, H-2:CO ratios ranging from 0.5 to 3, a pressure of 3.0 megapascals, with a gas hourly space velocity of 3500 (1/h). The reaction kinetics within this range of conditions can be modeled in a precise and accurate way thanks to the derived kinetic parameters. The FTS reaction hypothesized mechanism uses the Langmuir-Hinshelwood-Hougen-Watson theory, which predicts that carbon monoxide and hydrogen will have an adsorption behavior. The kinetic data obtained in this investigation were effectively modeled using a straightforward equak center dot Pn CO center dot Pm tion, which is as follows: -rCO = H2 ( )2 ) . This model implies that essential kinetic processes, such as CO (1+K center dot aCO center dot PnCO+aH2 center dot PmH2 dissociation by contact with adsorbed hydrogen, have already occurred. The first stage in the hydrogenation process is presumed to be fast and reversible, whereas the second step is presumed to be sluggish and rate-determining.

Automated summary

This study investigates the kinetics of the Fischer-Tropsch process synthesis using feedstocks from biogas. The results show that a simple model can accurately describe the reaction kinetics under different working conditions.