Laser-induced fluorescence of base adsorbed on surface sites in solid catalysts

被引：3

作者：

Lassoued, A ^{[1
]}

Deson, J ^{[1
]}

Lalo, C ^{[1
]}

Batamack, P ^{[1
]}

Gédéon, A ^{[1
]}

Fraissard, J ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, ESA 7069, Lab Chim Surf, F-75252 Paris 05, France

来源：

JOURNAL OF FLUORESCENCE | 2000年 / 10卷 / 03期

关键词：

solid catalyst surfaces; laser-induced luminescence; acid sites; quinoline;

D O I：

10.1023/A:1009449127193

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

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 Bronsted 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.

引用

页码：261 / 268

页数：8

共 25 条

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