Selective Oxidation of Aldehyde over Hydroxymethyl Group Catalyzed by Gold Nanoparticles in Aqueous Phase |
| |
| Authors: | Han-bao Chong Gui-qi Gao Guang Li |
| |
| Affiliation: | School of Physics and Material Science, Anhui University, Hefei 230601, China;Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, China;Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, China;School of Physics and Material Science, Anhui University, Hefei 230601, China |
| |
| Abstract: | A protocol for selectively oxidizing aldehyde over hydroxymethyl group is developed, using biomass starch protected gold nanoparticles (NPs) as catalyst. The Au NPs show high selectivity that aldehyde is oxidized into carboxylic acid while alcoholic hydroxyl group stays intact in selective oxidation of 4-(hydroxymethyl)-benzaldehyde. The heterogeneous catalysis system is composed of soluble catalysts and insoluble substrate. The gold catalyst is prepared, preserved and applied for catalytic oxidation all in water. After reaction conditions are optimized, Hbegin{document}$_2$end{document}Obegin{document}$_2$end{document} is found to be the best oxidizing agent with complete conversion. Besides, the gold catalyst displays good versitility for aldehyde derivatives. After reaction completes, organic components are extracted by organic solvent and gold NPs in water are separated and recycled. |
| |
| Keywords: | Au nanoparticle Water-solubility Selective oxidation Starch |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化学物理学报(中文版)》浏览原始摘要信息 |
|
点击此处可从《化学物理学报(中文版)》下载免费的PDF全文 |
|
