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Gas phase aldol condensation of lower aldehydes over clinoptilolite rich natural zeolites

Paper ID Volume ID Publish Year Pages File Format Full-Text
43247 45959 2008 6 PDF Available
Title
Gas phase aldol condensation of lower aldehydes over clinoptilolite rich natural zeolites
Abstract

Catalytic materials prepared from natural clinoptilolite by ion exchange and acid treatment have been successfully used in the gas phase conversion of acetaldehyde and formaldehyde into acrolein. The modifications made on the raw clinoptilolite have generated important changes of the texture and catalytic sites. The results in catalysis showed that the nature and the amount of condensation products strongly depend on the acid–base properties of catalysts. The highest stability, activity and selectivity to acrolein have been proved by the catalysts having high number and strength of basic sites.

Graphical abstractCatalytic materials prepared from natural clinoptilolite by ion exchange and acid treatment have been successfully used in the gas phase conversion of acetaldehyde and formaldehyde into acrolein. The modifications made on the raw clinoptilolite have generated important changes of the texture and catalytic sites. The results in catalysis showed that the nature and the amount of condensation products strongly depend on the acid–base properties of catalysts. The highest stability, activity and selectivity to acrolein have been proved by the catalysts having high number and strength of basic sites.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Natural clinoptilolite; Aldol condensation; Acetaldehyde; Formaldehyde
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Gas phase aldol condensation of lower aldehydes over clinoptilolite rich natural zeolites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 351, Issue 2, 30 December 2008, Pages 253–258
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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