公开(公告)号：US20160168081A1

公开(公告)日：2016-06-16

申请号：US14904726

申请日：2014-07-16

Applicant: INVISTA TECHNOLOGIES S.À R.L.

Inventor： Sudhir N.V.K. AKI ,  James M. GARNER ,  William J. TENN ,  Thomas E. VOS

IPC: C07C253/10 ,  C07C253/34 ,  B01D3/14 ,  B01J31/18

Abstract: A solvent is at least partially separated from a catalyst. The catalyst comprises nickel and a bidentate phosphorus-containing ligand. The method for separation involves distilling a catalyst solution. The ratio of 2-pentenenitrile to 3-pentenenitrile in distillation column bottoms is controlled to reduce the amount of 3-pentenenitrile which is isomerized to form 2-methyl-3-butenenitrile. Isomerization of 3-pentenenitrile to 2-methyl-3-butenenitrile and subsequent isomerization of 2-methyl-3-butenenitrile to 2-methyl-2-butenenitrile, and/or hydrocyanation of 2-methyl-3-butenenitrile to methylglutaronitrile represents a loss in adiponitrile yield in a process for making adiponitrile.

Abstract translation: 溶剂至少部分地与催化剂分离。 该催化剂包括镍和二齿含磷配体。 分离方法包括蒸馏催化剂溶液。 控制蒸馏柱底部中2-戊烯腈与3-戊烯腈的比例，以减少异构化形成2-甲基-3-丁烯腈的3-戊烯腈的量。 3-戊烯腈异构化为2-甲基-3-丁烯腈，随后将2-甲基-3-丁烯腈异构化为2-甲基-2-丁烯腈，和/或2-甲基-3-丁烯腈氢化为甲基戊二烯代表损失 在己二腈的制备方法中的己二腈产率。