Abstract

Novel film catalysts of the polystyrene (Ps) and trimethyl phosphate (P) nanoparticles were synthesized on glass substrates by soft chemistry using doctor blade method. Subsequently, the prepared Ps–P film catalysts were characterized by various techniques, including fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), density (d), polarizing microscope (PM), X-ray diffraction (XRD) and thermal analysis. According to the results, the structure and morphology of film catalysts were confirmed by all analyses. The Ps–P films, as heterogeneous solid catalysts, have demonstrated strong activity for Knoevenagel condensation, producing alkenes of high purity. The recovered yields are excellent, up to 96% in solvent-free conditions at room temperature. Further, the film catalysts have showed high stability, good reusability (up to five times) while maintaining their efficiency and productivity.

Graphic Abstract

In the present study, the polystyrene/phosphate film catalysts were characterized and synthesized by soft chemistry method. These film catalysts were show an excellent catalytic activity for Knoevenagel condensation reaction. Further, they have demonstrated high yields, in solvent-free at room temperature, with a good reusability and high stability.

中文翻译：

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聚苯乙烯-磷酸酯薄膜的合成，表征及其在无溶剂条件下作为Knoevenagel缩合反应的非均相催化剂的应用

摘要

使用刮刀法通过软化学在玻璃基板上合成了新型的聚苯乙烯（Ps）和磷酸三甲酯（P）纳米薄膜催化剂。随后，通过多种技术对制备的Ps-P薄膜催化剂进行了表征，包括傅立叶变换红外光谱（FTIR），核磁共振（NMR），密度（d），偏振显微镜（PM），X射线衍射（XRD）和热分析。根据这些结果，通过所有分析证实了膜催化剂的结构和形态。Ps-P薄膜作为非均相固体催化剂，对Knoevenagel缩合反应具有很强的活性，可生产高纯度的烯烃。回收率极高，室温下在无溶剂条件下的收率高达96％。此外，膜催化剂显示出高稳定性，

图形摘要

在本研究中，通过软化学方法对聚苯乙烯/磷酸盐薄膜催化剂进行了表征和合成。这些膜催化剂显示出对Knoevenagel缩合反应的优异催化活性。此外，它们已经证明在室温下无溶剂的情况下具有高收率，具有良好的可重复使用性和高稳定性。