At system (C), hydroformylation of 1-dodecene was studied and the catalyst in PEG phase was recycled seven times without loss activity and the maximal loss of Rh in upper product phase only 2.1%(wt).

• 在体系(C)中研究了锗催化的1一十二烯的氢甲酞化反应；优化反应条件下含催化剂的PEG相经七次循环使用；催化活性无明显下降；循环过程中锗在上层产品相中的流失明显降低；最大流失量为2.；1%25(wt)。