Effect of the thermal conductivity and catalyst layer thickness on the Fischer-Tropsch synthesis selectivity using structured catalysts

Oxidative coupling of methane on cordierite monoliths coated with Sr/La2O3 catalysts. Influence of honeycomb structure and catalyst-cordierite chemical interactions on the catalytic behavior

“…Thus we may think that it does not state an additional mass transfer resistance, as compared with individual particles. In the same vein, in a recent work Merino et al [38] reported that below 50 µm there is no additional diffusion resistance for the Fischer-Tropsch reaction on a Co,Re/Al2O3 catalytic layer deposited on a metallic monolith. On the other hand, the gaseous flow is more homogeneous in the channels of the monolith than in a powder catalytic bed, with the additional advantage of a lower pressure drop, which results in better contact between reactants and catalytic surface, thus increasing the overall reaction rate.…”

The pivotal role of an interconnected cellular conductive structure to manage heat removal in compact Fischer–Tropsch fixed-bed reactors

“…4 In this way, the heat transfer is strongly enhanced in compact reactors because the primary radial heat exchange mechanism is changed from convection to conduction within the thermally connected solid matrix of the honeycomb monolith. 4 Besides packed honeycomb monoliths, other washcoated metallic structures with different geometries, such as micromonoliths 5 and foams, 6,7 as well as micro-fibrous entrapped catalysts 8,9 were proposed for FTS. All these metallic structures exhibit an effective temperature control, but with the foremost limit of low catalyst inventory.…”

“…All these metallic structures exhibit an effective temperature control, but with the foremost limit of low catalyst inventory. [5][6][7][8][9] Closed-cross flow structures packed with catalyst pellets 10,11 were also proposed, claiming an increase of the C 5+ productivity with respect to the aforementioned washcoated structures. However, these structures still exploit a flowdependent heat transfer mechanism, 10,11 which implies a less flexible operation of the reactor.…”

FeCrAlloy Monoliths Coated with Ni/Al2O3 Applied to the Low-Temperature Production of Ethylene

“…As the ODE reaction is exothermic, the use of a metallic substrate would be adequate due to their high thermal conductivity, which would result in a better temperature control [31,32]. Taking this into account, FeCrAlloy ® monoliths would be suitable substrates because the thermal treatment generates a rough alumina layer which improves the catalyst particles anchorage on the metallic surface [32].…”