METHOD FOR SEPERATING 1-BUTENE FROM C4-CONTAINING HYDROCARBON STREAMS BY HYDROFORMYLATION
申请人:Kreidler Burkard
公开号:US20110071321A1
公开(公告)日:2011-03-24
The invention relates to a method for separating 1-butene from C
4
-containing hydrocarbon mixtures, comprising isobutene and 1-butene, by hydroformylation, wherein the catalytic system used is made of one of the transition metals of the group 8 to 10, preferably rhodium, and a bisphosphite ligand of the formula (I), where X is a divalent substituted or unsubstituted bisalkylene or bisarylene group having one or more heteroatom(s), Y is a divalent substituted or unsubstituted bisarylene or bisalkylene group having one or more heteroatom(s), Z is oxygen or NR
9
, and R
1
, R
2
, R
3
, R
4
are identical or different, substituted or unsubstituted, linked, unlinked or condensed aryl or heteroaryl groups, and R
9
is hydrogen or a substituted or unsubstituted alkyl or aryl group having one or more heteroatom(s), wherein the bisphosphite ligand of the formula (I) is used in an excess of a molar ratio of 100:1 to 1:1 to the transition metal, and that with a 1-butene conversion of more than 95% less than 5% of the present isobutene is reacted method for separating 1-butene from c
4
-containing hydrocarbon streams by hydroformylation
本发明涉及一种通过羰基化反应从含有C4烃的混合物中分离1-丁烯的方法,其中所使用的催化系统由8至10族过渡金属之一(优选为铑)和公式(I)的双膦配体组成,其中X是具有一个或多个杂原子的二价取代或未取代的双亚烷基或双芳烃基团,Y是具有一个或多个杂原子的二价取代或未取代的双芳基或双亚烷基基团,Z是氧或NR9,R1、R2、R3、R4相同或不同,取代或未取代,连接、未连接或缩合的芳基或杂芳基团,R9是氢或具有一个或多个杂原子的取代或未取代的烷基或芳基团,其中公式(I)的双膦配体以100:1至1:1的摩尔比过量使用于过渡金属,并且在1-丁烯转化率超过95%的情况下,不到5%的异丁烯被反应。该方法用于从C4含量的碳氢化合物流中分离1-丁烯。