| 张昉,李和兴.介孔Ru-PPh2-KIT-6催化剂应用于水相中烯丙醇异构化的研究[J].分子催化,2008,(1):11-16 |
| 介孔Ru-PPh2-KIT-6催化剂应用于水相中烯丙醇异构化的研究 |
| Study on the Mesoporous Ru-PPh2-KIT-6 as a Catalyst Used in Water-medium Isomerization of Homoallylic Alcohol |
| 投稿时间：2007-08-28 修订日期：2007-10-29 |
| DOI： |
| 中文关键词: 均相催化剂固载化,Ru-PPh_2-KIT-6,烯丙醇异构化,清洁有机合成 |
| 英文关键词:Immobilization of the homogenous catalyst,Ru-PPh_2-KIT-6,Isomerization of homoallylic alcohols,Clean organic synthesis |
| 基金项目:国家自然科学基金(20407014)，科技部973预研项目(2005CCA01100) |
| 张昉 李和兴 |
| 华东师范大学上海市绿色化学与化工过程绿色化重点实验室 上海200062 |
| 摘要点击次数: 1082 |
| 全文下载次数: 1986 |
| 中文摘要: |
| 以2-(二苯基膦)乙基三乙氧基硅烷和正硅酸乙酯为混合硅源,运用延时共缩聚法制备带有二苯基膦(PPh2-)修饰配体的KIT-6型介孔氧化硅材料,通过络合Ru(II)获得固载化Ru(II)有机金属催化剂(Ru-PPh2-KIT-6),该催化剂具有规整介孔结构.在水相烯丙醇异构化反应中显示高活性和高选择性,催化性能接近均相催化剂,活性相与载体结合牢固,能够重复使用5次以上. |
| 英文摘要: |
| A diphenylphosphine(PPh2)-modified KIT-6 type mesoporous silica was synthesized by co-condensation method using tetraethoxysilane(TEOS) and 2-(diphenylphosphino)ethyltriethoxysilane(DPPTS) as the mixed silicon source,from which the immobilize Ru(II) organometallic catalyst was obtained through strong coordination between the PPh2-group on the KIT-6 support and the Ru(II).The as-prepared Ru-PPh2-KIT-6 catalyst exhibited ordered mesoporous structure.During the isomerization of homoallylic alcohol in an aqueous medium,the Ru-PPh2-KIT-6 catalyst exhibited high activity and selectivity,almost the same as the corresponding homogeneous catalyst.The catalyst could be used repetitively for more than 5 times owing to the strong interaction of the Ru(II) active sites with the support which prevent them from leaching. |
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