Iodide and acetate promotion of carbonylation of methanol to acetic acid: Model and catalytic studies
作者:M.A. Murphy、B.L. Smith、G.P. Torrence、A. Aguiló
DOI:10.1016/0022-328x(86)80137-1
日期:1986.4
step in catalytic methanol carbonylation. The effects of water, LiBF4, and other additives are also reported. Iodide salts also promote catalytic methanol carbonylation at low water concentrations. In the case of LiI promoter, lithium acetate is produced in catalytic solutions via the reaction of LiI with methyl acetate. The promotional effects of iodide and acetate on both the model and catalytic systems
碘化物和乙酸盐可提高Li [RhI 2(CO)2 ]与MeI在25°C的乙酸溶液中的反应速率,这是催化甲醇羰基化反应中速率确定步骤的模型。还报道了水,LiBF 4和其他添加剂的作用。碘化物盐还可以在低水浓度下促进甲醇催化羰基化。就LiI助催化剂而言,乙酸锂通过LiI与乙酸甲酯的反应在催化溶液中产生。根据碘化物或乙酸盐与[RhI 2(CO)2 ] -的碘化物或乙酸盐配位,合理化了碘化物和乙酸盐对模型和催化体系的促进作用,从而产生了五坐标的Rh I 阴离子作为反应中间体,用于确定与MeI的速率。