The preparation of Bi2O3-NiAl2O4 Nanocomposite and its Catalytic Application in the Synthesis of Organic Heterocyclic Compounds

Metal oxides nanocatalysts have attracted significant attention for their wide range of applications.Among these oxides, Bismuth oxide, Bi2O3, due to its high refractive index, dielectric permittivity, marked photoconductivity and photoluminescence, is used in a variety of areas such as sensor technologyandopticalcoatings [1]. Also, Alumina-based composites are extensively used as catalytic materials, ceramic separation membranes and catalytic membranes. Alumina properties such as high specific surface area, surface acidity and defects in their crystalline structures are theimportant factors in such wide range of applications [2].Regarding, the Bi2O3-NiAl2O4Nanocompositewas preparedby co-precipitationprocess. The nanocomposite was characterized by XRD, FESEM,TEM and FT-IR. Recently, One-Pot multicomponent reactions (MCRs) have played an increasingly important role in organic and medicinal chemistry because of decreasing a number of reaction steps, lowercosts, high atom-economy, energy saving, and the avoidance of time consuming,waste consumption and expensive purification processes [3]. Hence, multicomponent reactions (MCRs) are very important for the construction of many heterocyclic compounds such as benzoxanthene and pyrimidinone derivatives. The synthesis of these compounds due to large number of biologicaland pharmacological properties has received a great deal of attention.The aims of this research were to synthesize and characterize the Bi2O3-NiAl2O4 nanocomposite. The catalytic properties of the nanocomposite in the synthesis of heterocyclic compounds were also investigated.