| 摘要 |
<p>The invention relates to a method for the synthesis of methacrolein and/or methacrylic acid, consisting of: a first step in which a charge comprising a compound having formula R-CH(CH3)-CH2OH, wherein R is either CH2OH (2- methyl-1,3-propanediol) or CHO (3-hydroxy-2-methyl-propanaldehyde), is subjected to a dehydration reaction, optionally in the presence of a dehydration catalyst; and a second step in which the effluent from the first step is subjected to an oxidation reaction in the presence of an oxidation catalyst, producing methacrolein and/or methacrylic acid. The method of the invention uses, as a raw material, a by-product or an intermediate product from the synthesis of butanediol-1,4 by means of hydroformylation of allyl alcohol.</p> |
