fulltext.study @t Gmail

Selectivity enhancement in the catalytic hydrogenation of propionitrile using ionic liquid multiphase reaction systems

Paper ID Volume ID Publish Year Pages File Format Full-Text
42646 45935 2009 9 PDF Available
Title
Selectivity enhancement in the catalytic hydrogenation of propionitrile using ionic liquid multiphase reaction systems
Abstract

A new ionic liquid based, multiphase reaction system was investigated for the catalytic hydrogenation of propionitrile. The reaction system under investigation consisted of a solid heterogeneous Ru-catalyst (Ru on carbon), two liquid phases and the hydrogen gas-phase. By using two liquid phases in the reactor – of which one was an ionic liquid – it was possible to improve significantly the selectivity for the formation of propylamine by suppressing consecutive reactions to dipropylamine and tripropylamine. This enhanced selectivity resulted either from the protonation of the primary formed amine (in case of the Brønsted acidic ionic liquids dimethylcyclohexylammonium hydrogensulfate and 1-butylimidazolium hydrogensulfate) or from the extraction of the primary amine into the organic phase (in case of a 1-ethyl-3-methylimidazolium ethylsulfate/1,2,4-trichlorobenzene biphasic system).

Graphical abstractAn approach to improve the primary amine selectivity in nitrile hydrogenation is presented. The new concept was carried out in a multiphase system comprising two liquid phases, namely an ionic liquid and an organic solvent. The new concepts led to an increase in propylamine selectivity from approx. 50% in the IL-free reference system up to 85% in the IL system.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Propylamine; Hydrogenation; Ionic liquid; Biphasic
First Page Preview
Selectivity enhancement in the catalytic hydrogenation of propionitrile using ionic liquid multiphase reaction systems
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 356, Issue 1, 1 March 2009, Pages 43–51
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us