Study on the Preparation of Methyl Acrylate by Carbonylation of Acetylene Catalyzed with Iron Carbonyl

Acetylene carbonylation reaction has been preliminarily explorated with a variety of metal carbonyl,the result is that the iron carbonyl has the catalytically active. The factors of the dosage of catalyst,the molar radio of CO / C2H2,temperature,initial pressure and the role of CO were studied and the active center has also been s peculated. The results of the experiments as follows: n( Fe( CO)5) /n(C2H2) = 0. 26,the reactant methanol as solvent,the initial pressure is 4. 2 MPa and reaction temperature 140 ℃ for 6 h. Under this conditions,the s elective of methyl acrylate approached 97%. The higher n( CO) / n( C2H2) is crucial to the high selective of m ethyl acrylate.