ADSORPTION OF AROMATICS IN NAY AND AIPO4-5 - CORRELATION WITH THE SORBENT PROPERTIES IN SEPARATIONS

被引：23
|
作者：
BARTHOMEUF, D
DEMALLMANN, A
机构：
[1] Laboratoire de Reactivite de Surface et Structure, CNRS, Universite Paris VI, URA 1106, 75252 Paris Cedex 05
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1990年 / 29卷 / 07期
关键词：
D O I：
10.1021/ie00103a050
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The adsorption of benzene and o-xylene is studied by means of infrared spectroscopy on AlPO4-5 and NaY. These aromatics do not interact significantly with AlPO3-5, but changes in the packing of these molecules alter the shape of the infrared spectra. On NaY a strong cation-ir electron interaction is observed for the two hydrocarbons and for other aromatics. The selectivity in the separation of C8aromatics by weak adsorption on AlPO4-5 (preference for o-xylene) is related to the high cohesive energy of this hydrocarbon. The selectivity of these hydrocarbons by strong adsorption on NaY (preference for m-xylene) is related to the favored interaction of this isomer, which is the most basic, with the acidic Na+ions. © 1990, American Chemical Society. All rights reserved.
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收藏
页码：1435 / 1438
页数：4
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