催化学报 ›› 2013, Vol. 34 ›› Issue (6): 1192-1200.DOI: 10.1016/S1872-2067(12)60561-0

• 研究论文 • 上一篇    下一篇

氟功能化蛋黄型氧化硅材料负载Pd纳米粒子用于水相烯烃加氢

李晓菲a,b, 张文娟b, 张丽敏a, 杨恒权b   

  1. a 山西师范大学材料与化学学院,山西临汾041000;
    b 山西大学化学化工学院,山西太原030006
  • 收稿日期:2012-12-24 修回日期:2013-03-05 出版日期:2013-06-07 发布日期:2013-06-09
  • 通讯作者: 张丽敏,杨恒权
  • 基金资助:

    国家自然科学基金(20903065, 21173137).

Pd nanoparticles confined in fluoro-functionalized yolk-shell-structured silica for olefin hydrogenation in water

LI Xiaofeia,b, ZHANG Wenjuanb, ZHANG Limina, YANG Hengquanb   

  1. a School of Chemistry and Materials Science, Shanxi Normal University, Linfen 041000, Shanxi, China;
    b School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, Shanxi, China
  • Received:2012-12-24 Revised:2013-03-05 Online:2013-06-07 Published:2013-06-09
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (20903065 and 21173137).

摘要:

先将Pd纳米粒子负载于SiO2球表面上,再经包裹、刻蚀、硅烷化修饰,得到氟丙基功能化“蛋黄”型结构催化剂.并采用X射线衍射、透射电镜、N2吸附-脱附和热重等对催化剂进行了表征.结果表明,该催化剂在水相烯烃加氢反应中表现出较高的活性,明显高于未经氟丙基修饰的同类催化剂.该催化剂通过离心便可实现回收,多次循环使用后仍保持较高的活性.

关键词: 钯, 功能化, 烯烃, 水相, 加氢

Abstract:

Pd nanoparticles were confined in yolk-shell mesoporous silica via encapsulation, etching and modification, producing a functionalized yolk-shell-structured catalyst. This catalyst was characterized using X-ray diffraction analysis, transmission electron microscopy, N2 adsorption-desorption, and thermogravimetric analysis. The catalyst had high activity for olefin hydrogenation in water, higher than that of the unmodified counterpart. The catalyst can be recovered through centrifugation, and its activity is not significantly decreased after several reaction cycles.

Key words: Palladium, Functionalization, Olefin, Aqueous phase, Hydrogenation