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n ‐butane carbonylation to n ‐pentanal using a cascade reaction of dehydrogenation and SILP ‐catalyzed hydroformylation
Author(s) -
Walter Simon,
Haumann Marco,
Wasserscheid Peter,
Hahn Hanna,
Franke Robert
Publication year - 2015
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14676
Subject(s) - hydroformylation , dehydrogenation , chemistry , butane , catalysis , ligand (biochemistry) , carbonylation , propane , rhodium , ionic liquid , selectivity , isomerization , phase (matter) , bimetallic strip , organic chemistry , medicinal chemistry , carbon monoxide , biochemistry , receptor
A novel gas‐phase process has been developed that allows direct two‐step conversion of butane into pentanals with high activity and selectivity. The process consists of alkane dehydrogenation over a heterogeneous Cr/Al 2 O 3 catalyst followed by direct gas‐phase hydroformylation using advanced supported ionic liquid phase (SILP) catalysis. The latter step uses rhodium complexes modified with the diphosphite ligands biphephos (BP) and benzopinacol to convert the butane/butene mixture from the dehydrogenation step efficiently into aldehydes. The use of the BP ligand results in improved yields of linear pentanal because SILP systems with this ligand are active for both isomerization and hydroformylation. © 2014 American Institute of Chemical Engineers AIChE J , 61: 893–897, 2015