甲醇羰基化制乙酸

Monsanto公司的甲醇羰基化制乙酸工艺具有甲醇转化率高、产物产率高等优点,但也存在着主催化剂铑价格昂贵、助催化剂碘化物腐蚀设备等缺点.本文重点从催化机理研究方面介绍了国内外对Monsanto技术的最新改进研究工作、英国石油(BP)公司的甲醇羰基化制乙酸铱基催化体系(名为Cativa^TM工艺),并介绍了无碘化物促进的甲醇羰基化催化体系,分析了不同催化体系的优缺点及研究发展趋势.

Studies of Producing Acetic Acid by Carbonylation of Methanol

The Monsanto process for the carbonylation of methanol to acetic acid has many advantages such as high conversion of reactants and high yield of the product, but the disadvantages are also apparent, which include the high cost of the catalyst (rhodium) and the severe corrosion to equipment by the co-catalyst iodide. The improvement of Monsanto's technology, the Ir-based catalyst of BP (Cativa^TM technology) and especially the catalytic mechanism are reviewed. In addition, the advantages and disadvantages of different catalytic systems and the progress tendencies of those systems in the future are also introduced.