Abstract
Strongly acidic mesoporous zeolite beta (MZB or Beta/MCM-41composite ) with bimodal pore structure and stepwise distributed acidity has been synthesized by novel route using zeolite BEA as silica-alumina source . The material was characterized by various techniques . Powder XRD showed the existence of well-structured microphase zeolite Beta and mesophase MCM-41 in the composite materials. The performance of the composite material as a catalyst was investigated for the synthesis of various biologically active compounds through MCRs. The composite Beta/MCM-41 displayed excellent activity towards the synthesis of diarylpyrimidinones and amidoalkyl naphthols through multicomponent reactions (MCRs) as compared to the microporous zeolite H-BEA. Keywords : mesoporous zeolite; composite Beta/MCM-41 ; heterogeneous catalyst; MCRs
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