公开(公告)号：US20230159423A1

公开(公告)日：2023-05-25

申请号：US18055442

申请日：2022-11-15

Applicant: Evonik Operations GmbH

Inventor： Ana MARKOVIC ,  Frank Geilen ,  Alexander Brächer ,  Benedikt Dercks ,  Stefan Drees ,  Tonia Weber ,  Robert Franke ,  Dirk Fridag

IPC: C07C45/50 ,  B01J23/46 ,  B01J27/14 ,  C07C45/62

CPC classification number: C07C45/50 ,  B01J23/464 ,  B01J27/14 ,  C07C45/62

Abstract: A process for preparing aldehydes by a homogeneously catalysed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream.

公开(公告)号：US11820739B2

公开(公告)日：2023-11-21

申请号：US18055442

申请日：2022-11-15

Applicant: Evonik Operations GmbH

Inventor： Ana Markovic ,  Frank Geilen ,  Alexander Brächer ,  Benedikt Dercks ,  Stefan Drees ,  Tonia Weber ,  Robert Franke ,  Dirk Fridag

IPC: C07C45/50 ,  C07C45/62 ,  B01J23/46 ,  B01J27/14

CPC classification number: C07C45/50 ,  B01J23/464 ,  B01J27/14 ,  C07C45/62

Abstract: A process for preparing aldehydes by a homogeneously catalysed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream.

公开(公告)号：US20230159425A1

公开(公告)日：2023-05-25

申请号：US18055989

申请日：2022-11-16

Applicant: Evonik Operations GmbH

Inventor： Frank Geilen ,  Alexander Brächer ,  Stefan Drees ,  Benedikt Dercks ,  Robert Franke ,  Ana Markovic ,  Armin Matthias Rix ,  Martin Oldemeyer ,  Dirk Fridag

IPC: C07C45/50

CPC classification number: C07C45/505 ,  C07C2523/46

Abstract: A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C4 to C20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.