Microkinetics simulations are presented on the intrinsic activity and selectivity of the Fischer-Tropsch reaction with respect to the formation of long chain oxygenated hydrocarbons. Two different chain growth mechanisms are compared: the carbide chain growth mechanism and the CO insertion chain growth mechanism. The microkinetics simulations are based on quantum-chemical data on reaction rate ...

The control on product distributions in Fischer-Tropsch synthesis by feeding olefins in the n-paraffin solvent over a 20 wt.% Co/SiO2 catalyst under the typical reaction conditions of 503K, 2.1MPa, H2/CO = 2, and co-fed olefins 16 mol% in CO base in a trickle bed reactor has been studied. The selected co-fed olefins include 1-octene, 2-octene and 1-dodecene. Results showed that the addition of ...

3.1 PRODUCTION OF CLEAN SYNTHESIS GAS......................................................................... 9 3.1.1 Biomass Gasification .............................................................................................. 9 3.1.2 Gas Cleanup.......................................................................................................... 10 3.2 CONVERSION OF SYNTHESIS GAS T...

The structure-activity relations in the alumina-supported cobalt catalysts are studied at the realistic conditions of Fischer-Tropsch synthesis using in situ time-resolved XRD and catalytic measurements. Cobalt sintering during the first 3-5 h of the reaction and cobalt carbidisation at a longer time on stream (>8 h) coincide with catalyst deactivation.

A flexible combined heat, power and fuel production concept, FlexCHX, is being developed for managing the seasonal mismatch between solar energy supply demand heat characteristic of northern central Europe. The process produces an intermediate carrier (Fischer-Tropsch (FT) hydrocarbon product), which can be refined to transportation fuels using existing refineries. FlexCHX integrated into vario...

Advanced biofuels are produced by upgrading the syncrude from biomass gasification and subsequent Fischer-Tropsch (FT) synthesis. The technology is termed to liquid process (BtL) can be categorized into conventional BtL novel processes. utilizes a water gas shift reaction, while an external energy source meet H 2 demand in FT Six different routes, two based on four with solid oxide electrolyzer...

Over the coming years, world is projected to witness an upsurge in “drop-in” aviation biofuel production as part of renewable energy and bioeconomy developments. This paper presents a comprehensive review current status biojet fuel development uptake global commercial industry, including state-of-the-art certified technologies (i.e. Fischer-Tropsch (FT); hydroprocessed esters fatty acids (HEFA)...

Taking the importance of Pakistan’s dire need for energy breakthrough, in this paper, we explore how country’s vast estimated reserves 175 billion tons Thar coal is a useful source clean and efficient production good quality liquid fuel. Coal to (CTL) technology has gathered increasing attention among many countries with sufficient volume reserves, can also be implemented Pakistan, which result...

A well-known observation in the Fe-catalyzed Fischer-Tropsch (FT) reaction is that Fe-carbide catalysts deactivate due to carbon deposition. In comparison, influence of such deposits on product distribution has been less widely reported. The present work investigates relationship between kinetics FT for a carburized Raney-Fe model catalyst and composition catalytic surface with focus deposits. ...

General aviation aircraft driven by piston engines (APE) have gained a broad range of applications. Aviation fuels blended with long-chain alcohols is promising means for APE to mitigate its dependency on fossil fuel. Herein, the combustion and emission characteristics an compression ignition engine burning baseline diesel, RP-3 kerosene, synthetic Fischer-Tropsch (FT) fuel were analyzed. The t...