| 含咪唑基的铜配合物催化蔗糖水解研究 | |
| Hydrolysis of Sucrose Catalyzed by Copper(Ⅱ) Complexes with Imidazole Group | |
| 摘要: 合成了一种含双咪唑功能团的铜配合物，研究了双咪唑、组氨酸以及咪唑-丙氨酸铜配合物在较温和条件下(70 ℃，pH=7.0)的Tris(三羟基氨基甲烷)-H+缓冲溶液中对蔗糖水解的催化作用。研究了金属铜离子、咪唑、氨基酸3类功能团的组分配比以及实验条件如温度、pH值、反应时间等因素对催化反应的影响。结果表明：咪唑、氨基酸与铜离子在物质的量的配比为1∶1∶1时，催化效果最好；pH=7.0的中性溶液中，组氨酸铜配合物在70 ℃反应6 h后蔗糖的水解率可达80%以上。该论文也研究了十六烷基三甲 | |
| 关键词: 咪唑 铜配合物 蔗糖 胶束 纤维素 | |
| 基金项目: | |
| Abstract: A copper(Ⅱ) complex containing dual-imidazole functional groups was synthesized. The hydrolysis of sucrose catalyzed by the dual-imidazole , histidine and imidazole-alanine copper(Ⅱ) complexes was investigated in TRIS(tris(hydroxymethyl) aminomethane)-H+ buffer solution with pH value of 7.0 at 70 ℃. Effects of copper ions, imidazole, amino acid functional groups temperature, pH values, and reaction time were studied on the catalytic reaction. The results indicate that the catalytic efficiency reach the maximum at the molar ratio of 1∶1∶1 for imidazole, amino acids and copper(Ⅱ) ions. The degradation of sucrose catalyzed by the histidine-copper complex is more than 80% after six hours at 70 ℃. The influence of three kinds of surfactant micelles(cetyltrimethyl ammonium bromide(CTAB), sodium dodecyl sulfate(SDS) and polyoxyethylene lauryl ether(Brij35)) on the hydrolysis of sucrose was also investigated. The anionic CTAB micelle shows obvious promotion for the catalytic reactions. | |
| Keywords: imidazole copper(Ⅱ) complex sucrose micelle cellulose | |
| 摘要点击次数: 1647 | |
| 全文下载次数: 2032 | |
| 张 平,孟祥光,杜 娟,李建梅,曾伟鹏,胡常伟.含咪唑基的铜配合物催化蔗糖水解研究[J].无机化学学报,2009,25(8):1371-1374. | |
| 查看全文 查看/发表评论 下载PDF阅读器 | |
| Support information: | |
|
| |
|
| |
|
| |