02014nas a2200241   4500008004100000022001400041245012400055210006900179260009800248300001400346490000700360520106600367653002501433653001301458653002501471653002301496100002501519700002501544700002901569700002001598700002501618856012901643       2010                        eng d  a0268-257500aSynthesis of acrolein by gas-phase dehydration of glycerol over silica supported bronsted acidic ionic liquid catalysts0 aSynthesis of acrolein by gasphase dehydration of glycerol over s  aTHE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLANDbJOHN WILEY & SONS LTDcOCT  a1319-13240 v853 a<p>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</p>10aacidic ionic liquids10aacrolein10aglycerol dehydration10asupported catalyst1 aMunshi, Mudassir, K.1 aLomate, Samadhan, T.1 aDeshpande, Raj, Madhukar1 aRane, Vilas, H.1 aKelkar, Ashutosh, A.  uhttps://library.ncl.res.in/content/synthesis-acrolein-gas-phase-dehydration-glycerol-over-silica-supported-bronsted-acidic-0