Briefs - "Hydrogen Sulfide Poisoning of Nitrided and Carbided Iron Catylysts in the Fischer-Tropsch Synthesis"

Sulfur as a catalyst promoter or selectivity modifier in heterogeneous catalysis

“…The first example of interest involves the hydrogenation of CO to long chain hydrocarbons which may more commonly be referred to as Fischer-Tropsch (FT) synthesis. For 50 years there have been reports of the beneficial effects of using a catalyst which has been exposed to sulfur, [29][30][31] with examples extending to 2 of the 4 active FT metals (Co and Fe). Before evaluating specific examples, it is worth highlighting the results which would traditionally be expected from exposing Catalysis Science & Technology Perspective a FT catalyst to sulfur.…”