作为钯载体的三嗪基介孔有机聚合物:苏木偶联反应中的理化性质、孔隙率和催化性能

IF 2.9 4区 化学 Q2 POLYMER SCIENCE Polymer International Pub Date : 2023-12-06 DOI:10.1002/pi.6599
Suha S Altarawneh, Jafar S Aldehasat, Taher S Ababneh, Andreas Seifert, Saddam Weheabby, Ahmed K Hijazi, Lo'ay A Al-Momani, Ibtesam Y Al-jaafreh
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引用次数: 0

摘要

本文报告了新型介孔三嗪基有机聚合物的制备及其表征。这些聚合物是通过三聚氯氰与双酚或芳香二胺连接体之间的亲核缩合反应合成的。结果制备出两种三嗪基聚合物:三嗪醚聚合物和三嗪胺聚合物。这些聚合物具有介孔性质,表面积值在 345-1275 m2/g 之间,介孔体积在 0.273-1.03 cc/g 之间。孔径分布也证实了微介孔性,所有聚合物的微介孔都达到了 3.0 纳米。三嗪胺聚合物具有良好的热氧化稳定性,温度可达 450 °C。受中孔尺寸的启发,新型聚合物还被用作钯纳米粒子的支持物。X 射线衍射技术表明钯纳米粒子的成功加入,傅立叶变换红外光谱测量则证明聚合物在形成钯载体后保留了框架。为了确保钯纳米粒子的催化反应活性,我们在铃木偶联反应中使用了一个实例作为催化剂。该催化剂表现出显著的可回收性,可在七个循环中保持催化效率,从而使钯载三嗪基聚合物催化剂在未来各种有机反应中的应用成为可能。
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Triazine-based mesoporous organic polymers as palladium supports: physicochemical properties, porosity and catalytic performance in Suzuki coupling reaction

This article reports the preparation of new mesoporous triazine-based organic polymers and their characterization. The polymers were synthesized via a nucleophilic condensation reaction between cyanuric chloride and bisphenols or aromatic diamine linkers. As a result, two types of triazine-based polymers were prepared: triazine-ether and triazine-amine polymers. The polymers reveal a mesoporous nature with surface area values ranging between 345 and 1275 m2 g−1 and mesopore volume between 0.273 and 1.03 cm3 g−1. These values were determined from argon gas isotherms at 87 K. The pore size distribution also confirmed the micro–mesoporosity, which reached up to 3.0 nm for all polymers. The triazine-amine polymer shows good thermal oxidative stability up to 450 °C. Motivated by the mesopore size, the new polymers were also employed as palladium nanoparticle supports. The X-ray diffraction technique indicated the successful incorporation of palladium nanoparticles, and Fourier transform infrared measurements proved that the framework of the polymers was retained after forming palladium supports. To ensure the catalytic reactivity of palladium nanoparticles, we employed one example as a catalyst in a Suzuki coupling reaction. The catalyst exhibited remarkable recyclability, maintaining catalytic efficiency through seven cycles, thereby enabling the use of palladium-loaded triazine-based polymeric catalysts in a variety of organic reactions in future. © 2023 Society of Industrial Chemistry.

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来源期刊
Polymer International
Polymer International 化学-高分子科学
CiteScore
7.10
自引率
3.10%
发文量
135
审稿时长
4.3 months
期刊介绍: Polymer International (PI) publishes the most significant advances in macromolecular science and technology. PI especially welcomes research papers that address applications that fall within the broad headings Energy and Electronics, Biomedical Studies, and Water, Environment and Sustainability. The Journal’s editors have identified these as the major challenges facing polymer scientists worldwide. The Journal also publishes invited Review, Mini-review and Perspective papers that address these challenges and others that may be of growing or future relevance to polymer scientists and engineers.
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