Verfahren zur Herstellung von Aldehyden

摘要

A process for producing an aldehyde, which comprises a reaction step of producing an aldehyde by reacting an olefinic compound with carbon monoxide and hydrogen in the presence of a rhodium complex catalyst comprising at least rhodium and an organic phosphite in a reaction zone, a separation step of obtaining a catalyst solution containing the rhodium complex catalyst by separating the aldehyde from a reaction solution taken from the reaction zone, and a recycling step of recycling the catalyst solution into the reaction zone, wherein from 0.0001 to 5 time mols of an organic phosphonate of the formula (a) is present to rhodium in the catalyst solution, HP(O)(OX<1>)(OX<2>) wherein X<1> is hydrogen or a monovalent organic group, X<2> is a monovalent organic group, and X<1> and X<2> may be bonded to form a divalent organic group.