Compositions of matter are disclosed which are highly useful in hydroformylation processes. The compositions are non-charged, non-chelated bis- and tris-(alkyl diaryl phosphine) rhodium carbonyl hydrides. The substituents of the alkyl group includes heteroorganic radicals containing ether, ester, keto and hydroxy oxygen, phosphine oxide and phosphorus ester phosphorus, amine, amide, amine oxide and heterocyclic nitrogen groups. These compositions are highly stable and selective catalysts for the hydroformylation of olefins under certain conditions. The disclosed catalyst systems contain a large excess of phosphine ligand and employ alpha-olefin plus synthesis gas reactant mixtures having a high H.sub.2 /CO ratio at relatively low pressures. They produce moslty aldehydes derived from terminal attack on the alpha-olefin reactant. In the case of low olefins, such as butene-1, the products can be advantageously removed in a continuous manner, as distillate components from a ligand reaction mixture kept at an elevated temperature and continuously fed by an appropriate mixture of the reactants.
本发明披露了一种在氢甲酰化过程中非常有用的物质组成物。该组成物是非带电、非螯合的双(烷基二芳基膦)、三(烷基二芳基膦)
铑羰基
氢化物。烷基基团的取代基包括含有醚、酯、酮和羟基氧、膦氧和
磷酸酯
磷、胺、酰胺、胺氧和杂环氮基的杂有机基团。这些组成物是高度稳定和选择性的催化剂,可在一定条件下用于烯烃的氢甲酰化反应。披露的催化剂体系含有大量的
膦配体,并采用具有高H.sub.2/CO比的α-烯烃加合物和合成气反应物混合物,在相对较低的压力下。它们主要产生从α-烯烃反应物的末端攻击中得到的醛。对于低烯烃,例如
丁烯-1,可以从保持在高温下并由适当的反应物混合物连续供给的
配体反应混合物中以馏分组分的形式优势地去除产物。