Study on Carbonylation of Acetylene for the Synthesis of Methyl Acrylate
Ouyang Peng, Tian Hengshui, Sun Hao, Wang Heling, James Maxime (Department of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)
Acetylene, carbon monoxide and methanol were used as reactants,nickel halide as main catalyst at high-pressure to synthesize methyl acrylate. The process conditions, such as mole ratio of reactants, reaction pressure, temperature, time and amount of catalyst were studied in the experiment in order to set up the best process conditions. The experiments showed that, when methanol was used as solvent, under the conditions of initial pressure 5.2~5.5 MPa,temperature about 185 ℃, n(methanol)∶n(acetylene) ∶n(CO)=5.5~6.2∶1∶1, amount of catalyst 0.85 wt %~0.9 wt %, react for 4~5 h, then the yield of methyl acrylate reaches 90 % or above.