【摘要】 研究了在IrCl3·nH2 O、H2 IrCl6·nH2 O催化甲醇羰基化反应中一氧化碳分压、反应温度、溶剂等条件对反应产物的影响。实验结果表明 ,反应温度保持不变的条件下 ,随着一氧化碳分压的增高 ,生成二甲醚的选择性降低 ,而乙酸和乙酸甲酯的选择性增加 ;在CO分压保持不变的条件下 ,随着反应温度升高 ,生成乙酸的选择性略有增加 ;在反应温度和CO分压保持不变的条件下 ,使用甲苯作溶剂 ,乙酸的选择性大大提高 ,可达 86% ,而没有二甲醚生成更多还原

【Abstract】 In this paper,the influence of reaction conditions,such as CO pressure,reaction temperature and the solvent on the products of methanol carbonylation in IrCl 3·nH 2O and H 2IrCl 6·nH 2O catalytic systems was studied.The experimental results showed that at the same reaction temperature,as the CO pressure increased,the selectivity for dimethyl ether decreased while the selectivity for acetic acid and methyl acetate increased.At the same CO pressure,as the reaction temperature increased,the selectivity for acetic acid increased.At the same reaction temperature and CO pressure,using toluene as solvent,the selectivity for acetic acid greatly enchanced and reached to 86%,and no dimethyl ether was formed.更多还原