摘要/Abstract

合成了一种具有均匀孔径（6 nm）的杨梅状超交联纳米微球，并负载Pd制备了HCP-（PS-DVB）-Pd（0）纳米颗粒催化剂，同时对其物理化学性质进行了X射线粉末衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、氮气吸脱附测试等表征.活性测试结果表明该催化剂在室温下能够高效催化溴苯的Suzuki偶联反应，同时具有优秀的循环性能，重复10次反应后催化剂的活性仍能达到95%以上.循环后催化剂的比表面积保持在480.5 m²·g^-1，表明了该微球的结构稳定性，展示了催化剂HCP-（PS-DVB）-Pd（0）在化学合成和工业化中良好的应用前景.
关键词: 超交联PS-DVB, 单分散微球, 钯纳米催化剂, Suzuki偶联反应
In this study, a controlled synthesis of hyper-crosslinked monodisperse microsphere with homogeneous mesoporous aperture about 6 nm is presented. After supported with palladium, the catalyst was performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption and desorption surface area analyses. The results showed that HCP-(PS-DVB)-Pd(0) possessed high catalytic activity for Suzuki-Miyaura cross-coupling reaction at room temperature, and the catalyst also show excellent reusability. After recycled for 10 times, the yield can maintain above 95% and the surface areas can still reach 480.5 m²·g^-1. These results suggest that the HCP-(PS-DVB)-Pd(0) catalyst has potential applications in synthetic and industrial chemistry.
Key words: hyper-crosslinked PS-DVB, monodisperse microsphere, Pd nanoparticles catalyst, Suzuki cross-coupling reaction


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