| 用正电子谱学研究USY沸石中二次孔的脱水 |
| |
| 引用本文： | 朱俊,王少阶,马莉,陈志权.用正电子谱学研究USY沸石中二次孔的脱水[J].物理化学学报,1999,15(11):1053-1056. |
| |
| 作者姓名： | 朱俊 王少阶 马莉 陈志权 |
| |
| 作者单位： | Department of Physics,Wuhan University,Wuhan 430072 |
| |
| 摘 要： | 超稳Ｙ型沸石（ＵＳＹ）分子筛是石油催化裂化中的优异催化剂，它是由ＨＹ型沸石经高温水热处理制备的，它的特点之一是具有良好的热稳定性．因而，对ＵＳＹ的改性研究一直受到关注［１-５］，尤其是在制备ＵＳＹ过程中由于水热处理所产生大量二次孔，它与ＵＳＹ的结构与?..
|
| 关 键 词： | 用电子湮没谱学 USY沸石 脱附 |
| 收稿时间： | 1999-04-13 |
| 修稿时间： | 1999-07-07 |
The Study of Dehydration from the Secondary Pore in USY Zeolite by the Positron Annihilation Pectroscopy |
| |
| Zhu Jun,Wang Shaojie,Ma Li,Chen Zhiqian.The Study of Dehydration from the Secondary Pore in USY Zeolite by the Positron Annihilation Pectroscopy[J].Acta Physico-Chimica Sinica,1999,15(11):1053-1056. |
| |
| Authors: | Zhu Jun Wang Shaojie Ma Li Chen Zhiqian |
| |
| Institution: | Department of Physics,Wuhan University,Wuhan 430072 |
| |
| Abstract: | The positron lifetime spectra were measured as a function of dehydration time for the ultra stable Y zeolite(USY) samples unheated, heated at 180 ℃in air and at 500 ℃in vacuum respectively. All spectra were resolved into five components. The intensity of the fifth component I5 is sensitive to the structure of the second pore in USY. The experimental results indicate that long time pumping with 0.5 Pa vacuum can dehydrate, but heating the sample at 500 ℃is a more effective method of dehydration for the second pore in USY zeolite. |
| |
| Keywords: | Positron annihilation USY zeolite Dehydration |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
