In this study, a series of new hybrid catalysts were prepared by dispersing sulfonated polyvinyl alcohol (SPVA) in the porous matrix of Al-pillared α-zirconium phosphate. Initially, the α-zirconium phosphate (ZP) was prepared by reflux method, which was subsequently intercalated with [Al₁₃O₄(OH)₂₄(H₂O)₁₂]⁷⁺ cationic clusters to prepare Al-pillared α-zirconium phosphate (AZP). A significant improvement in interlayer space, surface area and porosity of the parent zirconium phosphate was noticed due to bilayer intercalation of Al₁₃⁷⁺ species into the interlayer region. The ZP and AZP materials were used as host lattice for dispersion of sulfonated polyvinyl alcohol. The obtained hybrid materials were characterized using XRD, FESEM, HRTEM, TGA-DTA, FTIR, UV–Vis, TPD and XPS analytical techniques. The polymeric species were decorated as crystalline nanoparticles in the periphery of ZP particles, whereas they occurred in a well dispersed in the AZP lattice. TPD study revealed a significant improvement in the number of medium and strong acidic sites after dispersion of the SPVA polymer in the AZP matrix. The hybrid materials were used as efficient heterogeneous catalysts for multicomponent one pot synthesis of 4,6-diarylpyrimidin-2(1H)-ones by condensation of aryl aldehydes, ketones and urea using ethanol as solvent. Structurally diverse diarylpyrimidinones were synthesized in high yield and purity in a short span of time. The enhanced catalytic activity of the hybrid material has been ascribed to the well dispersion of the polymeric species and improved accessibility of the acidic sites due to expanded interlayer space of AZP material.

在这项研究中，通过将磺化聚乙烯醇（SPVA）分散在铝柱状α-磷酸锆的多孔基质中，制备了一系列新的杂化催化剂。最初，通过回流法制备α-磷酸锆（ZP），然后将其插入[Al ₁₃ O ₄（OH）₂₄（H ₂ O）₁₂ ] ⁷⁺阳离子簇中，以制备铝柱状α-磷酸锆（AZP）。由于Al ₁₃ ^7+的双层插层，发现母体磷酸锆的层间空间，表面积和孔隙率有了显着改善。种进入夹层区。ZP和AZP材料用作分散磺化聚乙烯醇的基质。使用XRD，FESEM，HRTEM，TGA-DTA，FTIR，UV-Vis，TPD和XPS分析技术对获得的杂化材料进行了表征。聚合物质在ZP颗粒的外围装饰为结晶纳米颗粒，而它们则分布在AZP晶格中。TPD研究表明，将SPVA聚合物分散在AZP基质中后，中酸性位点和强酸性位点的数量有了显着改善。该杂化材料被用作高效多相催化剂，用于多组分一锅法合成4，6-二芳基嘧啶-2（1H）-一元醇，方法是使用乙醇作为溶剂，通过芳基醛，酮和尿素的缩合反应。在短时间内以高收率和纯度合成了结构多样的二芳基嘧啶酮。杂化材料增强的催化活性归因于聚合物种类的良好分散性以及由于AZP材料层间空间的扩大而改善了酸性位点的可及性。