Anti-ASF Distribution of Fischer–Tropsch Hydrocarbons in Supercritical-Phase Reactions

Direct wax synthesis from syngas was implemented by supercritical-phase Fischer–Tropsch synthesis (FTS) reaction. By introducing supercritical-phase n-pentane into the reaction, waxy hydrocarbon formation rate was increased significantly while light hydrocarbon formation rate was suppressed effectively. Anti-Anderson–Schultz–Flory distribution of FTS hydrocarbons was realized at lower temperatures, such as 473 K. The intermediate, olefins, readily readsorbed onto the catalyst surface and significantly stimulated the carbon chain-growth process.