甲醇气相氧化羰化合成DMC I.复合载体铜基催化剂的制备

Study on DMC Via Gas-Phase Oxidative Carbonylation of Methanol Ⅰ.Catalyst Prep aration with Composite Carrier

考察了复合载体催化剂制备过程参数如双氧水处理载体添加组分E、微波辐射时间、载体组分Z与E的用量比、氯化铜与载体的用量比等对气相甲醇直接氧化羰化合成碳酸二甲酯的影响。研究结果表明,优化的催化剂制备条件为双氧水与E的质量比为1～3,微波辐射时间为30～50min,载体中Z与E的质量比为4～6,载体与氯化铜的质量比为1～3。在此条件下,甲醇转化率超过5%,DMC的选择性接近100%。

Influences of preparation parameters of H2O2/E,microwave treatment t ime,Z/E and Z/CuCl2 on gasphase oxidative carbonylation of methanol to prod uc e dimethyl carbonate were investigated.Optimal conditions were 1～3(volume), 30～ 50 min,4～6(mass),1～3(mass) correspondingly.Conversion of methanol was ove r 5% ,STY(space time yield) was 83 g/(L·h) and selectivity of DM C was 100% under optimum preparation conditions.