Metal foam-reinforced microporous FeAlOy/FeAlx composites for catalytic applications

Metal foam reinforced FeAlOy/FeAlx cermet-matrix composites for catalytic applications were synthesized by a low-temperature hydrothermal treatment of preforms consisting of an open-cell metal foam skeleton and a mechanically alloyed Fe-Al powder filling the metal foam cells. The composites had a compressive strength of about 100 MPa and a well-developed bi-porous structure. The metal foam skeleton in the composites ensured the increased thermal conductivity that was up to three times higher compared to non-reinforced cermet. In addition, the metal foam skeleton prevented catastrophic destruction at critical mechanical stresses. Comparative studies of the non-reinforced and copper foam reinforced cermet catalysts in the water-gas shift reaction revealed higher activity of the latter, which could be attributed to higher thermal conductivity and more favorable porous structure.

Automated summary

Metal foam reinforced cermet-matrix composites were synthesized using a low-temperature hydrothermal treatment, showing improved compressive strength and bi-porous structure. The metal foam skeleton increased thermal conductivity and prevented catastrophic destruction. The copper foam reinforced cermet catalyst exhibited higher activity in catalytic reactions.