NiO-SnO_2 Composite Nano-Powder: Preparation and Evaluation of their Catalytic Activity in the Synthesis of 1-amido alkyl-2-naphtholes

摘要

NiO-SnO_2 composite nano-powedr has been synthesized with an average size of 25 nm. The struetural and compositional analysis of the prepared catalyst has been carried out by using XRD, XRF, and TEM. The prepared nano-composite has been evaluated for its catalytic activity in the three-component reactions of aldehydes, amides / urea and 2-naphthol at 100℃.The reaction results in the synthesis of a variety of 1-amidoalkyl-2-naphthol derivatives in high yields and catalst can be recovered and recyeled without a significant loss in the catalytie activity.