摘要
制备了一系列硫化的负载型ＣｏＭｏ催化剂，在没有添加任何卤素作促进剂的情况下，研究了它们的甲醇气相羰化性能。实验表明，活性炭是最佳载体；硫化的Ｍｏ／Ｃ本身无羰化活性，但能促进甲醇的转化，Ｃｏ有利于羰化产物生成；Ｃｏ、Ｍｏ质量含量各为１０％时，硫化的ＣｏＭｏ／Ｃ催化剂具有较好的活性与选择性；反应温度为３００℃时，催化剂的羰化活性最高。当空速为１６００Ｌ／（ｋｇ·ｈ）、甲醇进料浓度为８．４ｍｏｌ％时，甲醇转化率达３１．５％，醋酸甲酯时空收率高达０．５６９ｍｏｌ／（ｋｇ·ｈ）。
A series of novel supported catalysts of sulfided CoMo were prepared.Vapor phase carbonylation of methanol was investigated over these catalysts without addition of halide in the feed as promoter. It was showed that (1) active carbon was an optimal support,(2) the sulfided Mo/C catalyst itself was inactive for methanol carbonylation, but Mo increased the conversion of methanol,while the sulfided Co/C catalyst was active for methanol carbonylation, (3) the sulfided CoMo/C catalyst was found to have significantly higher activity and selectivity when the contents of Co and Mo were 10% (mass) respectively, and (4) the reaction temperature around 300℃ was found to be optimum for carbonylation. When space velocity was 1600 L(kg cat.)-1h-1 and a methanol concentration was 8.4 mol%, the conversion of methanol was 31.5% and the space time yield of methyl acetate was 0.569 mol(kg cat.)-1h-1.
出处
《天然气化工—C1化学与化工》
CSCD
北大核心
1998年第1期9-12,共4页
Natural Gas Chemical Industry
基金
广东省自然科学基金
关键词
甲醇
羰化
醋酸甲酯
催化剂
钴
钼
乙酸
methanol
vapor phase carbonylation
halidefree
sulfided CoMo/C catalyst
