Tailoring Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine

Adam Chojecki; Maritza Veprek-Heijman; Thomas E. Müller; Peter Schärringer; Stan Veprek; Johannes A. Lercher

doi:10.1016/j.jcat.2006.10.012

Tailoring Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine

Adam Chojecki, Maritza Veprek-Heijman, Thomas E. Müller, Peter Schärringer, Stan Veprek, Johannes A. Lercher

Chair of Chemical Technology II

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

The influence of LiOH promotion on Co-based Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine was explored. Doping with LiOH led to an increase in the fraction of metallic surface area and reduced concentration of Lewis acid sites resulting from alumina particles decorating the metal surface. Two factors were found to be crucial to achieving high selectivity to primary amines. These factors include a low adsorption constant of n-butylamine relative to butyronitrile (because adsorbed butylamine is necessary for byproduct formation) and a low concentration of Lewis acid sites catalyzing condensation reactions.

Original language	English
Pages (from-to)	237-248
Number of pages	12
Journal	Journal of Catalysis
Volume	245
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2006.10.012
State	Published - 1 Jan 2007

Keywords

Adsorption constant
Amine
Cobalt
Condensation reaction
Hydrogenation
Lewis acid site
Lithium hydroxide
Nickel
Nitrile
Polarization effect
Raney-catalyst
Selectivity
Surface modification

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10.1016/j.jcat.2006.10.012

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title = "Tailoring Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine",

abstract = "The influence of LiOH promotion on Co-based Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine was explored. Doping with LiOH led to an increase in the fraction of metallic surface area and reduced concentration of Lewis acid sites resulting from alumina particles decorating the metal surface. Two factors were found to be crucial to achieving high selectivity to primary amines. These factors include a low adsorption constant of n-butylamine relative to butyronitrile (because adsorbed butylamine is necessary for byproduct formation) and a low concentration of Lewis acid sites catalyzing condensation reactions.",

keywords = "Adsorption constant, Amine, Cobalt, Condensation reaction, Hydrogenation, Lewis acid site, Lithium hydroxide, Nickel, Nitrile, Polarization effect, Raney-catalyst, Selectivity, Surface modification",

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AU - Chojecki, Adam

AU - Veprek-Heijman, Maritza

AU - Müller, Thomas E.

AU - Schärringer, Peter

AU - Veprek, Stan

AU - Lercher, Johannes A.

PY - 2007/1/1

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AB - The influence of LiOH promotion on Co-based Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine was explored. Doping with LiOH led to an increase in the fraction of metallic surface area and reduced concentration of Lewis acid sites resulting from alumina particles decorating the metal surface. Two factors were found to be crucial to achieving high selectivity to primary amines. These factors include a low adsorption constant of n-butylamine relative to butyronitrile (because adsorbed butylamine is necessary for byproduct formation) and a low concentration of Lewis acid sites catalyzing condensation reactions.

KW - Adsorption constant

KW - Amine

KW - Cobalt

KW - Condensation reaction

KW - Hydrogenation

KW - Lewis acid site

KW - Lithium hydroxide

KW - Nickel

KW - Nitrile

KW - Polarization effect

KW - Raney-catalyst

KW - Selectivity

KW - Surface modification

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DO - 10.1016/j.jcat.2006.10.012

M3 - Article

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SN - 0021-9517

VL - 245

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JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 1

ER -

Tailoring Raney-catalysts for the selective hydrogenation of butyronitrile to n-butylamine

Abstract

Keywords

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