Theoretical study of the physical adsorption of aspirin on natural clinoptilolite

被引：22
|
作者：
Lam, A [1 ]
Sierra, LR
Rojas, G
Rivera, A
Rodriguez-Fuentes, G
Montero, LA
机构：
[1] Univ La Habana, Inst Mat & React, Habana 10400, Cuba
[2] Inst Super Ciencias & Tecnol Nucl, Habana 10600, Cuba
[3] Univ La Habana, Lab Iberoamer Quim Computac & Diseno Mol, Habana 10400, Cuba
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 1998年 / 23卷 / 5-6期
关键词：
aspirin; clinoptilolite; natural zeolite; theoretical method;
D O I：
10.1016/S1387-1811(98)00060-2
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The use of new formulations of antacid-aspirin have been studied in recent years. The natural zeolite clioptilolite-heulandite has been tested as an antacid and in the adsorption of aspirin. In this work we have performed a theoretical study of physical adsorption. The aspirin molecule was oriented to the cavities in three principal directions. The Coulomb potential for the different models was calculated in order to confirm the results obtained for the adsorption enthalpies. All the values obtained for the adsorption enthalpies were negative, which could explain the adsorption process of aspirin. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：247 / 252
页数：6
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