| 彭建兵.聚离子液体固载金纳米粒子的制备及其催化性能[J].分子催化,2010,(6):0 |
| 聚离子液体固载金纳米粒子的制备及其催化性能 |
| Preparation and Catalytic Performance of Gold Nanoparticles Stabilized by Ionic Copolymer |
| 投稿时间：2010-09-16 修订日期：2010-10-20 |
| DOI： |
| 中文关键词: 氨基功能化离子液体 金纳米粒子 聚合 苯乙烯 环氧化 |
| 英文关键词:Amino-functionalized ionic liquid gold nanoparticles Polymerization styrene epoxidation |
| 基金项目: |
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| 摘要点击次数: 1482 |
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| 中文摘要: |
| 合成了氨基功能化乙烯基咪唑离子液体(AIL)，利用氨基固定金纳米粒子以及双键的聚合作用，获得了聚离子液体固载金纳米粒子的催化剂(GNPs-P-AIL)。采用红外光谱、紫外-可见光谱和透射电子显微镜等方法对GNPs-P-AIL进行了表征。结果表明，AIL在固定金纳米粒子并聚合后仍然保持着离子液体的基本结构，金纳米粒子分布均匀，粒径为6~8 nm。GNPs-P-AIL催化剂对苯乙烯环氧化具有较好的催化活性，以双氧水为氧化剂，在60 oC下反应6 h时，苯乙烯的转化率和环氧苯乙烷的选择性分别可达81.5%和88.3%。 |
| 英文摘要: |
| An amino-functionalized ionic liquid of N-(3-aminopropyl), N(3)-(vinyl)-imidazolium bromide (AIL) was synthesized and used to stabilize gold nanoparticles (GNPs). Further polymerization of the resultant GNP-containing AIL led to a composite catalyst (GNPs-P-AIL) in which GNPs were supported by ionic copolymer. The composite catalyst was characterized by means of Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, and transmission electron microscopy. It was found that the structure of ionic liquid moieties in GNPs-P-AIL remained intact after the GNP loading and successive polymerization processes and that the GNPs in the composite catalyst dispersed uniformly with the particle size of 6~8 nm. GNPs-P-AIL showed good catalytic performance in the epoxidation of styrene using H2O2 as the oxidant. The conversion of styrene and the selectivity for styrene oxide were as high as 81.5% and 88.3%, respectively, provided that the epoxidation reaction was performed at 60 oC for 6 h. |
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