Cobalt and iron species in alumina supported bimetallic catalysts for Fischer–Tropsch reaction.

Highlights: [•] Different cobalt and iron species as a function of Co/Fe ratio. [•] Higher dispersion of cobalt and iron in bimetallic catalysts. [•] Much easier iron and more difficult cobalt reducibilities in bimetallic catalysts. [•] Cobalt–iron mixed species in both calcined and reduced catalysts. [ABSTRACT FROM AUTHOR]