FTIR study of the adsorption of ammonia and pyridine on V2O5/MgO catalysts

被引：8

作者：

Akçay, M ^{[1
]}

Yurdakoç, M

Tonbul, Y

Yurdakoç, K

Hönicke, D

机构：

[1] Dicle Univ, Fac Arts & Sci, Dept Chem, TR-21280 Diyarbakir, Turkey

[2] Tech Univ Chemnitz, Fak Nat Wissensch, Lehrstuhl Chem, D-09107 Chemnitz, Germany

来源：

SPECTROSCOPY LETTERS | 1998年 / 31卷 / 08期

关键词：

V2O5/MgO catalysts; pyridine and ammonia adsorption; Bronsted and Lewis acid sites; FT-IR;

D O I：

10.1080/00387019808007448

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The adsorption of ammonia and pyridine on the surface of the V2O5/MgO catalysts has been studied for the determination of the Bronsted and Lewis acid sites. The data showed that the catalysts have medium Lewis acidity, but are also weak Bronsted acids, having active hydroxy groups able to interact with pyridine by H-bonding and by protonation. Pyridine is a suitable basic probe for the quantification of the catalysts. 32% V2O5/MgO catalyst is the most acidic catalyst.

引用

页码：1719 / 1732

页数：14

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