Preparation and Study of TiB2- and TiCB-supported Catalysts with Ni, NiCo, and CoCu Active Phases

NiAl, NiCoAl, and CoCuAl intermetallics on ceramic TiB2 and TiCB supports were produced through SHS of granular mixtures and used as precursors for preparation of catalysts for CO and propane deep oxidation and CO2 hydrogenation. The precursors were converted into catalysts by leaching with 20% NaOH solution and stabilization with 10% H2O2 solution. The activity and selectivity of catalysts was found to be determined by active phase composition. In CO2 methanation, NiCo/TiB2 catalyst gave the highest CO2 conversion (69.5% at 350°C) with 100% methane selectivity. In addition, NiCo/TiB2 was shown to the most active in propane oxidation (15.7% conversion at 450°C). 100% CO conversion was observed on catalysts with CoCu active phase at 400°C.