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Characterization of the acid–base properties of transition aluminas by model reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
43566 45977 2008 8 PDF Available
Title
Characterization of the acid–base properties of transition aluminas by model reaction
Abstract

The transformation of cyclopentanol and cyclohexanone mixture at 250 °C makes it possible in simple reaction to consider the acidic and basic properties of catalysts. Two reactions take place: the hydrogen transfer on basic sites and the alcohol dehydration on acid sites. These reactions were used to compare the different crystallographic phases of alumina: eta to alpha. From these reactions, we show that aluminas can be divided into two groups: (1) theta and alpha, which possess a basic character close to the one observed on MgO, and (2) eta, gamma and delta, which appear less basic, and possess an acidic character.

Graphical abstractThe transformation of cyclopentanol and cyclohexanone mixture at 250 °C makes it possible in a simple reaction to consider the acidic and basic properties of catalysts. Two reactions take place: the hydrogen transfer on basic sites and the alcohol dehydration on acid sites. These reactions were used to compare the different crystallographic phases of alumina: eta to alpha.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Acid–base catalyst; Alumina; Hydrogen transfer; Dehydration; Acid–base properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 348, Issue 1, 30 September 2008, Pages 71–78
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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