Synthesis of acrolein by gas-phase dehydration of glycerol over silica supported bronsted acidic ionic liquid catalysts

TitleSynthesis of acrolein by gas-phase dehydration of glycerol over silica supported bronsted acidic ionic liquid catalysts
Publication TypeJournal Article
Year of Publication2010
AuthorsMunshi, MK, Lomate, ST, Deshpande, RMadhukar, Rane, VH, Kelkar, AA
JournalJournal of Chemical Technology and Biotechnology
Volume85
Issue10
Pagination1319-1324
Date PublishedOCT
ISSN0268-2575
Keywordsacidic ionic liquids, acrolein, glycerol dehydration, supported catalyst
Abstract

BACKGROUND: Glycerol has become readily available as a byproduct from the biodiesel industry. High functionality and relatively low price make it a potential building block to produce value-added derivatives such as acrolein. RESULTS: Dehydration of glycerol to acrolein was performed over several silica supported Bronsted acidic ionic liquids as catalysts. All the catalysts prepared were active for the synthesis of acrolein (conversion of glycerol was observed in the range 35-90% with selectivity to acrolein in the range 29-58%). CONCLUSIONS: Catalyst prepared from triphenyl (3-sulfopropyl) phosphonium 4-methylbenzenesulfonate gave good activity and selectivity at 4 h reaction time. The conversion of glycerol decreased with increase in glycerol concentration. Higher temperature (325 degrees C) resulted in significantly lower conversion as well as selectivity to acrolein. With the use of two additional traps cooled to -7 degrees C, the selectivity to acrolein increased significantly for good catalysts. (C) 2010 Society of Chemical Industry

DOI10.1002/jctb.2434
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

1.818

Divison category: 
Chemical Engineering & Process Development