Part I : Binary Oxide Catalysts of Alumina–Rare Earth Oxides

Abstract

Abstract Binary oxides of alumina with rare earths like europium, samarium, praseodymium, neodymium, and yttrium were prepared by coprecipitation from corresponding nitrates. The composition, thermal stability, and surface properties of the catalysts were determined using XRD, TGA, XPS, and MAS 27Al NMR. Surface area and pore size of the catalysts were determined by BET and mercury porosimetry. The catalysts were found to be amorphous and aluminium atom showed tetrahedral and octahedral coordination in its lattice. Catalysts showed weak to moderate acidity and basicity.