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Unprecedented selectivities in aldol condensation over Mg–Al hydrotalcite in a fixed bed reactor setup

Paper ID Volume ID Publish Year Pages File Format Full-Text
49909 46773 2015 4 PDF Available
Title
Unprecedented selectivities in aldol condensation over Mg–Al hydrotalcite in a fixed bed reactor setup
Abstract

•Aldol condensation was successful over hydrotalcites in continuous setup.•Formation of heavier aldol condensation products was established.•Heavy aldol condensation products of furfural and acetone were identified.

Aldol condensation of furfural with acetone (molar ratio 1:10) was carried out in a flow fixed bed setup at 50 °C using calcined hydrotalcite with Mg/Al of 3 as a catalyst. Complete conversion of furfural and stable catalyst performance was obtained during the initial 50 h on stream. This period was followed by a rapid catalyst deactivation. In contrast to previous reports, higher molecular weight products that were identified as products of successive aldol condensation of acetone with furfural were observed. Their concentration was time-dependent with a maximum formation after 10 to 30 h on stream.

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Keywords
Aldol condensation; Hydrotalcites; Furfural; Acetone
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Unprecedented selectivities in aldol condensation over Mg–Al hydrotalcite in a fixed bed reactor setup
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 58, 5 January 2015, Pages 89–92
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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