Method for preparing acrolein from glycerol by catalytic dehydration of glycerol using a heteropolyacid catalyst
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United States of America Patent
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Dec 10, 2013
Grant Date -
Dec 27, 2012
app pub date -
Dec 21, 2010
filing date -
Dec 21, 2009
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Abstract
The invention relates to a method for preparing acrolein from glycerol or glycerin, according to which dehydration of glycerol or glycerin is carried out in the presence of a catalyst which consists in at least one silica modified with zirconium dioxide, titanium dioxide or tungsten trioxide or any combination of these oxides, and a heteropolyacid. This method may be used for making 3-(methylthio)propionic aldehyde (MMP), 2-hydroxy-4-methylthiobutyronitrile (HMBTN), methionine or its analogs, from acrolein.
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