Surface acidity diagnosis and catalytic activity of AlSBA materials obtained by direct synthesis

被引：41

作者：

Gédéon, A ^{[1
]}

Lassoued, A ^{[1
]}

Bonardet, JL ^{[1
]}

Fraissard, J ^{[1
]}

机构：

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

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2001年 / 44卷

关键词：

AlSBA-15; acidity; laser-induced fluorescence; TPD; cumene cracking;

D O I：

10.1016/S1387-1811(01)00263-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The objective of this work is to give a characterization of aluminosilicate AlSBA materials in particular with respect to acidity and the nature of acid sites. The number of acidic centers and the strength of these sites are determined by ammonia adsorption and temperature-programmed desorption (TPD). The Bronsted acidity of AlSBA is also assessed by measuring the relative intensity of the laser-induced fluorescence (LIF) quinolinium ion band peaking at 390 nm when quinoline is adsorbed on the surface of the material. When Lewis acid sites are present, a complex formed between these sites and quinoline is observed. The AlSBA samples showed a high and durable activity in the cumene cracking. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：801 / 806

页数：6

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