Fischer-Tropsch Synthesis. Poisoning of Iron Catalysts by H₂S in Synthesis Gas

Techno-economic analysis of production of Fischer-Tropsch liquids via biomass gasification: The effects of Fischer-Tropsch catalysts and natural gas co-feeding

“…Some of these contaminants might also lower the activity of catalysts in downstream processes such as WGS, FT, and reforming [24]. Sulfur is known to poison iron and cobalt-based FT catalysts by strongly adsorbing on the active sites of catalysts [25,26].…”

Development of sulfur tolerant catalysts for the synthesis of high quality transportation fuels

“…Moreover, Davis and his coworkers [5] have recently reported that the FTS activity of Fe catalysts is comparable or higher than that of Co catalysts when they are compared at temperatures that produce low levels of CH 4 and at relatively high space velocities. In 1960s, Anderson and coworkers [6][7][8][9] investigated the sulfur poisoning of the Fe-based catalysts and effects of the activation method and the additive on the deactivation rate of the catalysts using the CO-rich syngas. They found that nitrided and CO-pretreated catalysts show lower deactivation rates in the presence of the gaseous H 2 S than H 2 -pretreated catalyst [8].…”

Cobalt‐Iron‐Manganese Catalysts for the Conversion of End‐of‐Life‐Tire‐Derived Syngas into Light Terminal Olefins

“…However, making use of ELT‐derived syngas poses serious challenges to a FTS process. Due to the vulcanization process, ELTs contain large amounts of S (typically 1.2–1.8 wt.%), which has long been known as a poison for both Fe and Co FTS catalysts even when present in concentrations as low 1–2 mg m −3 . Hence, the required clean‐up of ELT‐derived syngas to yield an appropriately low S content would become expensive.…”

“…Due to the vulcanization process, ELTs contain large amountso fS(typically 1.2-1.8 wt.%), [18] which has long been known as ap oison for both Fe and Co FTS catalysts even when present in concentrations as low 1-2mgm À3 . [19][20][21][22][23][24] Hence, the required clean-up of ELT-derived syngas to yield an appropriatelyl ow Sc ontentw ould become expensive. In contrast, early reports [25,26] claim that the addition of S( in combination with alkali elements) to catalysts based on Group 8m etals lengthenedl ifetime, increased olefin content and reduced the production of high boilinghydrocarbons, enhancing both activity and selectivity of the treated catalysts.…”