甲醇羰化制甲酸甲酯的研究

Study of methanol carbonyiation to methyl formate

考察了在连续流动的气-固-液体系进行的甲醇羰化制甲酸甲酯(MeF)中反应压力、温度、催化剂组成及含量对甲醇转化及羰化的影响。结果表明,甲醇转化率对MeF收率随反应压力提高而增加;在反应温度80℃、液体催化剂浓度为0.45mol时,MeF选择性为100%。双组份铜基固体催化剂甲醇羰化活性优于单组份催化剂,其中以2%(W)Cu+0. 3%(W)B/γ-Al_2O_3催化剂活性最好。并应用TPD-MS检测考察了CO在不同固体催化剂上的吸附性能及硫对固体催化剂的中毒作用。

Methyl formate can be manufactured by carbonylation of methanol in a continuous-flow gas-solid-liquid system. The effect of reaction pressure and temperature, concentration of liquid catalyst,and component and content of solid catalyst on conversion and carbonylation of methanol has been investigated. The results show that conversions of methanol and yields of MeF are increased with reaction pressures. The best values are obtained at a reaction temperature of 80℃ and a liquid catalyst concentration of 0. 45mol. with a selectivity to methyl formate nearly 100%. The activity of a bicomponent Cu-based solid catalyst for methanol carbonylation is better than that of a monocomponent one, wherein a catalyst of 2 wt. % Cu+0. 3 wt. % γ-Al_2O_3 is preferred. Adsorption properties of CO on various solid catalysts and sulfur poisoning of them were also investigated with TPD-MS.