Study On Methyl Formate From Carbonylation Of Methanol

Base-catalysted methanol carbornylation represents an established, state-of-the-art commercial technology. In this paper, the catalytic system sodium methoxide (MeONd) with promoter ------ Dimethyl sulfoxixde(DMSO)used for methanol carbonylation to methyl formate is studied, the optimum quantity of DMSO have been defined and the dynamics of methanol carbonylation is reviewed.The effect of reaction pressure and temperature, the content of catalyst and the promoter has been investigated. The experiment results show that at temperature of 80癈 -> CO pressure of 4.0MI^ the MeONa concentration of 0.3808mol/L> the promoter (DMSO) concentration of Imol/L, the conversion of CO and methanol are 78.67% and 52.15% respectively. Under the most average yielding intension, the best time is 100 minutes.The results also show that the general reaction equation is: -dPco/dt=k \Cat\ *Pco "[MeOH]. Within all experiment confine, the rate of CO is one progression and the activation energy is 67.63 kj/mol. In the meantime , It is demonstrated that the reaction could be accelerated when DMSO is used as promoter of MeONa catalyst, and decreasing activation energy is the essence of promoter.