公开(公告)号：US20150314279A1

公开(公告)日：2015-11-05

申请号：US14649593

申请日：2013-12-05

Applicant: INVISTA NORTH AMERICA S.A.R.L.

Inventor： Thomas E. VOS

IPC: B01J31/18 ,  C07C253/10 ,  B01J37/00 ,  C07C253/30

CPC classification number: C07C253/10 ,  B01J31/185 ,  B01J37/00 ,  B01J2231/322 ,  B01J2531/847 ,  B01J2531/90 ,  C07C253/30 ,  C07C253/34 ,  C07C255/04

Abstract: The invention provides methods useful in the industrial scale process for hydrocyanation of butadiene to adiponitrile for recycle of unwanted byproduct 2-methyl-3-butenenitrile (2M3BN) by conversion to process intermediate pentenenitrile. The invention provides a process for generating catalysts useful for carrying out the hydrocyanation of butadiene to adiponitrile, the process comprising contacting the 2M3BN and a solution of a nickel-ligand catalyst in cis-2-pentenenitrile (cis-2PN), trans-2-pentenenitrile (trans-2PN), or a mixture thereof. The improved methods of the invention can provide improved catalyst solubility for bidentate ligands without a requirement for a Lewis acid catalyst promoter such as zinc chloride to be present.

Abstract translation: 本发明提供了用于将丁二烯氢化成己二腈的工业规模工艺中用于通过转化为中间体戊烯腈再循环不需要的副产物2-甲基-3-丁烯腈（2M 3 BN）的方法。 本发明提供了一种用于产生用于进行丁二烯至己二腈的氢氰化的催化剂的方法，该方法包括使2M3BN与镍 - 配位体催化剂在顺式-2-戊烯腈（顺式-2PN），反式-2- 戊烯腈（反式-2PN）或其混合物。 本发明的改进方法可以提供改进的二齿配体的催化剂溶解度，而不需要存在路易斯酸催化剂促进剂如氯化锌。