Laser-Induced Fluorescence of Base Adsorbed on Surface Sites in Solid Catalysts

被引：0
|
作者：
A. Lassoued
J. Deson
C. Lalo
P. Batamack
A. Gédéon
J. Fraissard
机构：
[1] UPMC-CNRS (ESA 7069),Laboratoire de Chimie des Surfaces
来源：
Journal of Fluorescence | 2000年 / 10卷
关键词：
Solid catalyst surfaces; laser-induced luminescence; acid sites; quinoline;
D O I：
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中图分类号：
学科分类号：
摘要：
The interaction of quinoline with the surface of Nafion-H and Nafion-H (13 wt%)/silica gel composites, silica gel itself, HY zeolite, dealuminated or not, and two types of alumina is studied by laser-induced fluorescence. Strong Brønsted acid sites interact with quinoline to form the quinolinum, that ion being revealed by a band peaking at 390 nm. When Lewis acid sites are present, a complex formed between these sites and quinoline is observed. A dimeric species and the diffusion of the adsorbates on the surface of the Nafion-H polymer are discussed.
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页码：261 / 261
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