The second method is used to provide a more accurate analysis of all reaction by-products. This type of catalyst is deactivated less quickly than in example 1. US Patent 5 describes a process for producing acrolein by means of dehydration of glycerol in the liquid phase or in the gas phase on acidic solid catalysts defined by its Hammett acidity. It is for this reason that acrolein finds many applications, especially as a synthetic intermediate. INDNA en.
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