PROCESS FOR PRODUCING ALDEHYDES BY HYDROFORMYLATIO

专利名称：PROCESS FOR PRODUCING ALDEHYDES BY

HYDROFORMYLATION OF OLEFINS

发明人：PACIELLO, ROCCO,KNEUPER, HEINZ-JOSEF,GEISSLER, BERNHARD,ROEPER,MICHAEL

申请号：EP97902245.6申请日：19970128公开号：EP0885183B1公开日：20010620

摘要：A process is proposed for producing aldehydes and alcohols by

hydroformylation of olefins with more than three carbon atoms. The process involves ahydroformylation stage, in which the olefin is hydroformylated at a pressure of 50-1000bar and a temperature of 50-180 °C with the aid of a rhodium catalyst dissolved in anhomogeneous reaction medium, and a catalyst recovery stage, in which the rhodiumcatalyst is extracted. The process involves the following steps: (a) hydroformylationcarried out in the presence of a rhodium complex containing a ligand in the form of aphosphorous-free multidentate organic nitrogen compound capable of forming

complexes with group VIII metals, said nitrogen compound containing in addition at leastone tertiary nitrogen rest which can be protonated with a weak acid; (b) extraction of theproduct from the hydroformylation stage, where appropriate after separation or partialseparation of the aldehydes and alcohols, using an aqueous solution of a distillable acid;(c) heat treatment of the aqueous acid extract in the presence of an organic solvent orsolvent mixture which is inert under the hydroformylation conditions, the aqueous acid

being distilled off, in order to de-protonate the complex and convert it to the organicphase; and (d) recycling of the organic phase containing the catalyst complex into thehydroformylation stage.

申请人：BASF AKTIENGESELLSCHAFT,BASF AG,BASF AKTIENGESELLSCHAFT

地址：DE

国籍：DE

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