| 包玉红.Cu-Mg-Al类水滑石的制备及其对二苯醚合成的催化性能研究[J].分子催化,2013,(6):548-555 |
| Cu-Mg-Al类水滑石的制备及其对二苯醚合成的催化性能研究 |
| The Production of Cu-Mg-Al Hydrotalcite Like Compounds and Their Performance for the Synthesis of Diaryl Ether |
| 投稿时间：2013-08-04 修订日期：2013-10-24 |
| DOI： |
| 中文关键词: 类水滑石 二苯醚；铜离子；苯酚；碘苯 |
| 英文关键词:hydrotalcites diaryl ether Cu2 phenol iodobenzene |
| 基金项目: |
|
| 摘要点击次数: 1698 |
| 全文下载次数: 2895 |
| 中文摘要: |
| 采用水热-尿素水解法制备了系列含Cu的类水滑石化合物CuxMg3-xAl1-LDHs，并考察了这些催化剂对苯酚和碘苯合成二苯醚反应的催化性能。利用X射线粉末衍射(XRD)、差热热重(TG-DTA）、H2程序升温还原(H2-TPR)和扫描电镜(SEM)等方法对催化剂进行了表征。结果表明，Cu2 含量较低时，类水滑石催化剂具有较好的结晶度和热稳定性，随Cu2 含量的增加，层板间距加大，热稳定性也随之降低。催化活性测试结果表明，适量Cu2 的掺入可使催化剂的催化活性提高，其中催化剂Cu2Mg1Al1-LDHs具有较好的催化活性，在80℃条件下二苯醚收率达到55%。 |
| 英文摘要: |
| Cu-Mg-Al hydrotalcite like compounds with different Cu-Mg-Al molar ratios were synthesized by urea hydrolysis-hydrothermal synthetic methods. The synthesized compounds were characterized by XRD、DTA、TPR、IR and SEM. The results showed that these compounds have structure of hydrotalcite with good crystallinity and thermal stability when the content of Cu2 was low. With the increasing of the content of Cu2 , the interlayer-spacing was enhanced and the thermal stabilities were reduced. The results demonstrated that the catalytic activity of layered double hydroxides (LDHs) can be improved with the inducing of Cu2 . Cu2Mg1Al1-LDHs catalyst gave high activity among the studied compounds, with 55% diaryl ether yield at the reaction of 80℃. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
