Abstrakt

In this study, the microstructure and catalytic potential of two Al-Ni-Fe alloys synthesised through a melt-spinning proces with compositions selected to favour quasicrystalline phase formation were investigated. Microstructural and chemical analyses performed using X-ray diffraction, scanning and transmission electron microscopy methods revealed complex morphology and multiphase composition for both alloys. The presence of a decagonal quasicrystalline phase in both materials and additional crystalline phases occurring along the grain boundaries was confirmed. The catalytic potential of alloys was explored in the phenylacetylene hydrogenation reaction. The Al70Ni15Fe15 catalyst demonstrated catalytic activity with over 90% phenylacetylene conversion and selectivity to styrene exceeding 50% for styrene production under mild reaction conditions, and Al71.5Ni23.5Fe5 alloy provided the substrate conversion of 46% and selectivity over 50%. The presented results provide insight into the experimental verification of the properties of the new sustainable catalyst solutions.