| 杂多酸在膨润土上的固载化：Ⅰ.表面酸性和吸附机理的研究 |
| |
| 引用本文： | 胡玉才 叶兴凯. 杂多酸在膨润土上的固载化：Ⅰ.表面酸性和吸附机理的研究[J]. 离子交换与吸附, 1995, 11(1): 58-67 |
| |
| 作者姓名： | 胡玉才 叶兴凯 |
| |
| 作者单位： | 中国科学院长春应用化学研究所 |
| |
| 摘 要： | 本文研究了四种具有Ｋｅｇｇｉｎ结构的杂多酸在膨润土及其酸处理样品上的吸附，利用Ｈａｍｍｅｔｔ指示剂法和丁胺滴定法测定了膨润土吸附ＰＷ１２和ＳｉＷ１２前后表面酸强度和酸度的变化。实验表明：四种杂多酸在不同载体上的吸附，对溶剂是有选择性，在一些有机溶剂中，ＰＷ１２和ＳｉＷ１２的吸附等温线都呈Ｌａｎｇｍｕｉｒ型，而ＰＭｏ１２和ＳｉＭｏ１２的吸附等温线随溶剂的不同呈现不同的形式。膨润土吸附杂多酸后酸强度不
|
| 关 键 词： | 杂多酸 膨润土 固载化 吸附 表面酸性 |
HETEROGENIGATION OF HETEROPLOY ACIDS ON BENTONITES I. STUDY OF SURFACE ACIDIC PROPERTIES AND ADSORPTION MECHANISM |
| |
| Hu Yucai, Ye Xingkai, Wu Yue. HETEROGENIGATION OF HETEROPLOY ACIDS ON BENTONITES I. STUDY OF SURFACE ACIDIC PROPERTIES AND ADSORPTION MECHANISM[J]. Ion Exchange and Adsorption, 1995, 11(1): 58-67 |
| |
| Authors: | Hu Yucai Ye Xingkai Wu Yue |
| |
| Abstract: | Adsorption of 12-phosphotungstic(PW12), 12-silicotungstic(SiW12), 12-phosphomoly bdic(PMo12) and 12-silicomolybdic(SiMo12) acids with Keggin structure on bentonite and its acid-treated samples were studied in this paper. Surface acid a Amount and acid Strength were also measured by Hammett indicator and n-butylamine titration methods before and after supports adsorbed PW12and SiW12. The experimental results were showed that adsorption isotherms of PW12 and SiW12 presented Langmuir type while those of PMo12 and SiMo12 had different types in different solvants. After supports adsorbed PW12 and SiW12, their acid strength kept unchanging but acid amount increased. In addition, adsorption mechanism was given. |
| |
| Keywords: | Heteropoly acids Bentonite Adsorption Surface acidic properties.Heterogenization |
| 本文献已被 CNKI 维普 等数据库收录！ |
