Hydroformylation process
    13.
    发明授权
    Hydroformylation process 失效
    加氢甲酰化过程

    公开(公告)号:US4808758A

    公开(公告)日:1989-02-28

    申请号:US125596

    申请日:1987-11-25

    CPC classification number: C07C45/50

    Abstract: In a hydroformylation process for the preparation of aldehydes by reacting aliphatic olefins of 2 to 12 carbon atoms with carbon monoxide and hydrogen at temperatures of 20.degree. to 150.degree. C. and pressures of 0.1 to 20 mPa in the liquid phase and in the presence of an aqueous solution of a catalyst containing originally 50 to 800 wt. ppm of rhodium and 25 to 30 wt. % of complex-forming, sulfonated or carboxylated triarylphosphines, in each case based on the aqueous solution, the improvement comprising adding fresh phosphine solution to maintain the original phosphine concentration, until the total concentration of complex-forming phosphines and secondary and degradation products of the phosphines not capable of forming complexes amounts to about 35 to 45 wt. % based on the aqueous solution to selectively form n-aldehydes.

    Abstract translation: 在通过使2至12个碳原子的脂族烯烃与一氧化碳和氢气在20至150℃的温度和0.1至20mPa的压力下在液相中以及在 含有最初为50〜800重量%的催化剂的水溶液。 ppm的铑和25〜30wt。 复合物形成,磺化或羧化的三芳基膦的百分比,在每种情况下基于水溶液,改进包括加入新鲜的磷化氢溶液以保持原始的磷化氢浓度,直到络合物形成膦的总浓度和二次和降解产物的总浓度 不能形成络合物的膦为约35〜45wt。 基于水溶液以选择性形成正醛。

    Hydroformylation process
    14.
    发明授权
    Hydroformylation process 失效
    加氢甲酰化过程

    公开(公告)号:US4801754A

    公开(公告)日:1989-01-31

    申请号:US125595

    申请日:1987-11-25

    CPC classification number: C07C45/50

    Abstract: In a hydroformylation process for the preparation of aldehydes by reacting aliphatic olefins of 2 to 12 carbon atoms with carbon monoxide and hydrogen at temperatures of 20.degree. to 150.degree. C. and pressures of 0.1 to 20 mPa in the liquid phase and in the presence of an aqueous solution containing 50 to 800 wt. ppm of rhodium and 25 to 30 wt. % of phosphines, in each case based on the aqueous solution as a catalyst system and in addition the transformation products of the phosphines, the improvement comprising draining off a portion of the aqueous solution of the catalyst system together with the reaction product and replacing the same by fresh aqueous solution of the catalyst system whereby the original catalyst selectivity for formation of n-aldehydes is maintained.

    Abstract translation: 在通过使2至12个碳原子的脂族烯烃与一氧化碳和氢气在20至150℃的温度和0.1至20mPa的压力下在液相中以及在 含有50〜800重量% ppm的铑和25〜30wt。 膦的百分比,在每种情况下基于作为催化剂体系的水溶液,此外,膦的转化产物,改进包括将一部分催化剂体系的水溶液与反应产物一起排出并将其替换 通过新鲜的催化剂体系水溶液,由此维持形成正醛的初始催化剂选择性。

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