In an improved process for hydroformylation of olefinically unsaturated compounds using a catalyst based on cobalt and/or rhodium employed in a two-phase medium, a catalyst based on cobalt and/or rhodium is used dissolved in a non-aqueous ionic solvent which is liquid at a temperature of less than 90° C., in which the aldehydes formed are slightly soluble or insoluble. More particularly, the catalyst comprises at least one complex of cobalt and/or rhodium co-ordinated with at least one nitrogen-containing ligand and the non-aqueous ionic solvent comprises at least one quaternary ammonium and/or phosphonium cation and at least one inorganic anion. At the end of the reaction, the organic phase is generally separated and the ionic non-aqueous solvent phase containing the catalyst can be re-used.
在一种使用
钴和/或
铑催化剂在两相介质中进行烯烃不饱和化合物加氢甲酰化的改进工艺中,
钴和/或
铑催化剂溶解在非
水离子溶剂中,该溶剂在温度低于90℃时为液态,在该溶剂中形成的醛是微溶或不溶的。更具体地说,催化剂包括至少一种与至少一种含氮
配体共价的
钴和/或
铑的络合物,非
水离子溶剂包括至少一种季
铵和/或
鏻阳离子和至少一种无机阴离子。反应结束后,有机相通常会被分离,而含有催化剂的非
水相离子溶剂则可重复使用。