Some embodiments of the present invention relate to processes to recover rhodium from a hydroformylation process. In some embodiments, the process to recover rhodium from the hydroformylation process comprises (a) treating a catalyst-containing stream from the hydroformylation process with 2.5 to 20 weight percent, based on the total weight of the stream, of a water-soluble organic amine of the following structure: wherein R32, R33, and R34 are each independently alkyls and ethoxylates, and wherein no more than one of R32, R33, and R34 is alkyl; (b) heating the resulting solution in the presence of syngas to a temperature of at least 65° C. to generate a rhodium-rich phase and a supernatant; and (c) removing the supernatant to recover the rhodium-rich phase.
本发明的一些实施方案涉及从加氢甲酰化工艺中回收
铑的工艺。在一些实施例中,从加氢甲酰化工艺中回收
铑的工艺包括 (a) 用 2.其中
R32、R33 和 R34 各自独立地为烷基和乙氧基化物,且
R32、R33 和 R34 中不超过一个为烷基;(b) 在合成气存在下将所得溶液加热至至少 65°C 的温度,以生成富
铑相和上清液;以及 (c) 去除上清液以回收富
铑相。