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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (05): 443-448. 上一篇    下一篇

研究论文

SBA-15负载Pd催化剂的制备及其在Heck反应中的应用研究

张飞豹，张蔡华，邓元，徐利文，邱化玉，来国桥，蒋剑雄   

  1. (杭州师范大学有机硅化学及材料技术教育部重点实验室 杭州 310012)
  • 投稿日期:2009-07-20 修回日期:2009-10-10 发布日期:2010-03-14
  • 通讯作者: 张飞豹 E-mail:feibaozhang@126.com
  • 基金资助:

    浙江省科技计划项目（No. 2007C21130;No. 2006C11124）资助项目

Palladium Supported on SBA-15 as a New Recyclable Catalyst for the Mizoroki-Heck Reaction

Zhang Feibao Zhang Caihua Deng Yuan Xu Liwen Qiu Huayu Lai Guoqiao Jiang Jianxiong*   

  1. (Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012)
  • Received:2009-07-20 Revised:2009-10-10 Published:2010-03-14

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1798

被引次数

22 | 6

利用水热反应制备了表面离子液体功能化的SBA-15介孔材料, 在丙酮溶液中与氯化钯反应, 然后使用水合肼在乙醇中还原. 测试了这种催化剂在Mizoroki-Heck反应中的催化活性. 与直接负载在SBA-15上的钯催化剂相比, 这种表面修饰的介孔SBA-15负载催化剂表现出更高的催化活性、可回收性和反应稳定性. 氮气吸脱附实验和小角XRD衍射实验表明, 在合成中, 材料的介孔性能并没有被破坏. 透视电镜也表征了该材料的表面形貌. 最后, Mizoroki-Heck反应表明该催化剂具有很高的催化活性, 且循环五次后, 其催化活性降低并不明显.

关键词: Mizoroki-Heck反应, 再循环催化剂, SBA-15, 钯, 芳基卤化物

The ionic liquid functionalized mesoporous SBA-15 materials were prepared under a hydrothermal condition, followed by treatment with palladium chloride in acetone and then the reduction with N2H4•H2O in ethanol. The catalytic properties of the materials were tested for the Mizoroki-Heck reaction. Compared with Pd material supported on the naked SBA-15, the Pd catalyst supported on the surface modified SBA-15 exhibits very high activity, recoverability and stability for the Mizoroki-Heck reaction. N2 adsorption-desorption isotherms and the low-angle X-ray diffraction (XRD) patterns indicate that the parent ordered mesoporous structure was well-maintained during the synthesis process. Transmission electron microscopy (TEM) was also used to investigate the morphology of the composite. High efficiency of the catalyst was proved in the Mizoroki-Heck reaction and the catalyst could be recycled five times without any loss of its catalytic activity.

Key words: Mizoroki-Heck reaction, catalyst recycling, SBA-15, palladium, aryl halide

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