| 磁载杂多酸催化剂的制备及催化性能研究 |
| |
| 引用本文： | 岳攀,元炯亮,杨苗苗. 磁载杂多酸催化剂的制备及催化性能研究[J]. 工业催化, 2008, 16(8): 14 |
| |
| 作者姓名： | 岳攀 元炯亮 杨苗苗 |
| |
| 作者单位： | 北京化工大学化工学院，北京 100029 |
| |
| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金，北京化工大学资源有效利用国家重点实验室开放课题 |
| |
| 摘 要： | 利用溶胶-凝胶法制备了磁载杂多酸催化剂（MSHC），并对其进行了表征，考察对乙酸和正丁醇酯化反应的催化活性。EDAX结果表明，元素Fe、Si、P和W存在于MSHC中。IR和XRD结果表明，磷钨酸在负载后基本保持Keggin结构。磁性测试结果表明，催化剂具有顺磁性，在强磁场作用下可进行高效磁性分离。酯化反应中MSHC的催化活性接近于纯磷钨酸。磁载杂多酸催化剂具有催化活性高、易回收、可重复使用和操作简单的优点，有效解决了催化剂活性组分易流失和难以回收循环利用的问题。
|
| 关 键 词： | 催化化学 磁载杂多酸催化剂（MSHC） 磷钨酸 溶胶-凝胶法 乙酸丁酯合成 |
Preparation and catalytic behaviors of magnetically supported heteropolyacid catalysts |
| |
| YUE Pan,YUAN Jiongliang,YANG Miaomiao. Preparation and catalytic behaviors of magnetically supported heteropolyacid catalysts[J]. Industrial Catalysis, 2008, 16(8): 14 |
| |
| Authors: | YUE Pan YUAN Jiongliang YANG Miaomiao |
| |
| Affiliation: | College of Chemical Engineering, Beijing University of Chemical Technology，Beijing 100029, China |
| |
| Abstract: | A novel magnetically supported heteropolyacid catalyst (MSHC) was prepared by sol gel method. EDAX results showed that the elements of Fe,Si,P and W existed in the MSHC. FTIR and XRD results indicated that the H3PW12O40 molecules had a Keggin structure. The MSHC was easily magnetically separable in strong magnetic field due to its paramagnetism. The MSHC exhibited activity for synthesis of n butyl acetate via esterification, comparable to that of pure H3PW12O40. The MSHC featured high catalytic activity, easily separability and repeated usability. |
| |
| Keywords: | magnetically supported heteropolyacid catalyst(MSHC) 12 tungstophosphoric acid sol-gel method n butyl acetate synthesis catalytic chemistry |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《工业催化》浏览原始摘要信息 |
|
点击此处可从《工业催化》下载全文 |
