“…A significant and potentially important variant of CO hydrogénation, but fundamentally different from Fischer-Tropsch processing since it does not require hydrogen per se, is the synthesis of hydrocarbons from carbon monoxide and steam [66]. This reaction can be formally represented by 3CO + H 2 0 -► (-CH 2 -) + 2C0 2 and proceeds at 190-250°C (~375-480°F) over cobalt, nickel, or ruthenium or at 250-300°C (~480-570°F) over iron.…”