高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (10): 2345.doi: 10.7503/cjcu20111194

• 高分子化学 • 上一篇    下一篇

双亲性离子液体功能化复合胶体颗粒的合成与催化性能

胡大林1, 张东阳2, 张成亮1, 丁书江2, 杨振忠1   

  1. 1. 中国科学院化学研究所, 高分子物理与化学国家重点实验室, 北京 100190;
    2. 西安交通大学理学院应用化学系, 西安 710049
  • 收稿日期:2011-12-19 出版日期:2012-10-10 发布日期:2012-09-12
  • 通讯作者: 丁书江, 男, 博士, 副教授, 主要是从事有机/无机复合材料研究. E-mail: dingsj@mail.xjtu.edu.cn; 杨振忠, 男, 博士, 研究员, 主要从事多相多组分材料研究. E-mail: yangzz@iccas.ac.cn E-mail:dingsj@mail.xjtu.edu.cn;yangzz@iccas.ac.cn
  • 基金资助:

    国家自然科学基金(批准号: 50733004, 20720102041, 50930002); 北京分子科学国家实验室开放课题和中央高校基本科研业务费专项资金(批准号: xjj2012092)资助.

Synthesis and Catalytic Performance of Amphiphilic Composite Colloidal Particles with Ionic Liquid Groups

HU Da-Lin1, ZHANG Dong-Yang2, ZHANG Cheng-Liang1, DING Shu-Jiang2, YANG Zhen-Zhong1   

  1. 1. State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
    2. Department of Applied Chemistry, School of Sciences, Xi’an Jiaotong University, Xi’an 710049, China
  • Received:2011-12-19 Online:2012-10-10 Published:2012-09-12

摘要:

采用硅烷偶联剂4-氯苄基三氯硅烷对二氧化硅颗粒表面进行改性, 制得表面接枝氯苄基的亲油二氧化硅颗粒. 在亲油二氧化硅颗粒表面继续接枝亲水性的十二烷基咪唑, 即可制得含有离子液体基团的双亲性二氧化硅颗粒. 通过静电吸附氯铂酸和硼氢化钠还原, 可在两亲性二氧化硅颗粒表面负载铂纳米颗粒, 从而得到双亲性二氧化硅颗粒催化剂. 用扫描电镜、 透射电镜、 X射线衍射和红外光谱等对所得样品进行表征, 并以苯甲醇氧化反应为研究对象对催化剂性能进行评价, 结果显示, 使用此催化剂可使苯甲酸的产率达到90%.

关键词: 双亲性, 离子液体, 复合胶体颗粒, 二氧化硅颗粒

Abstract:

After silane coupling agent 4-(chloromethyl)phenyltrichlorosilicane was grafted onto silica particles, the silica particles were endowed with hydrophobic benzyl choloride groups. Amphiphilic colloidal particles with ionic liquid groups were obtained by reacting with dodecyl imidazole. Pt nanoparticles were loaded onto the surface of amphiphilic colloidal particles by adsorption of chloroplatinic acid and further reduction by sodium borohydride. Scanning electron microscope(SEM), transmission electron microscope(TEM), X-ray diffractometer(XRD) and Fourier transform infrared spectroscopy(FTIR) were used to characterize the samples structures. The oxidation reaction of benzyl alcohol was used to evaluate the catalytic performance of amphiphilic colloidal particles loaded with Pt particles. The result indicates that the yield of benzoic acid is up to 90%.

Key words: Amphiphilic, Ionic liquid, Composite colloidal particles, Silica particles

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