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1998•Spectroscopy LettersRequires access

FTIR Study of the Adsorption of Ammonia and Pyridine on V2O5/Mgo Catalysts

Mehmet Akçay, Mürüwet Yurdakoç, Yalçın Tonbul, Kadir Yurdakoç, Dieter Hönicke

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Abstract

The adsorption of ammonia and pyridine on the surface of the V2O5/MgO catalysts has been studied for the determination of the Brønsted and Lewis acid sites. The data showed that the catalysts have medium Lewis acidity, but are also weak Brønsted 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.

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What this paper is about

The adsorption of ammonia and pyridine on the surface of the V2O5/MgO catalysts has been studied for the determination of the Brønsted and Lewis acid sites. The data showed that the catalysts have medium Lewis acidity, but are also weak Brønsted 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.

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Available abstract

The adsorption of ammonia and pyridine on the surface of the V2O5/MgO catalysts has been studied for the determination of the Brønsted and Lewis acid sites. The data showed that the catalysts have medium Lewis acidity, but are also weak Brønsted 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.

Key concepts: Chemistry, Pyridine, Catalysis, Lewis acids and bases, Ammonia, Protonation, Brønsted–Lowry acid–base theory, Inorganic chemistry

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FTIR Study of the Adsorption of Ammonia and Pyridine on V2O5/Mgo Catalysts — Research Paper | ScholarLens