Selective production of benzylamine via gas phase hydrogenation of benzonitrile over supported Pd catalysts

Yufen Hao; Maoshuai Li; Fernando Cárdenas-Lizana; Mark A Keane

doi:10.1007/s10562-015-1655-8

Selective production of benzylamine via gas phase hydrogenation of benzonitrile over supported Pd catalysts

Yufen Hao, Maoshuai Li, Fernando Cárdenas-Lizana, Mark A Keane

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Abstract

The continuous gas phase hydrogenation of benzonitrile has been studied over Pd/C and Pd/Al2O3 (mean Pd size = 2.5–3.0 nm from STEM). Toluene was the predominant product over Pd/C whereas benzylamine was preferred over Pd/Al2O3. This is linked to differences in Pd electronic character (from XPS) that impact on nitrile adsorption. Greater surface acidity and hydrogen availability (based on chemisorption/TPD) for Pd/C resulted in higher conversion rates. Operation at lower contact time for multiple Pd/Al2O3 beds in series promoted exclusive formation of benzylamine at an appreciably higher rate than reported in the literature.

Original language	English
Pages (from-to)	109-116
Number of pages	8
Journal	Catalysis Letters
Volume	146
Issue number	1
Early online date	9 Dec 2015
DOIs	https://doi.org/10.1007/s10562-015-1655-8
Publication status	Published - Jan 2016

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title = "Selective production of benzylamine via gas phase hydrogenation of benzonitrile over supported Pd catalysts",

abstract = "The continuous gas phase hydrogenation of benzonitrile has been studied over Pd/C and Pd/Al2O3 (mean Pd size = 2.5–3.0 nm from STEM). Toluene was the predominant product over Pd/C whereas benzylamine was preferred over Pd/Al2O3. This is linked to differences in Pd electronic character (from XPS) that impact on nitrile adsorption. Greater surface acidity and hydrogen availability (based on chemisorption/TPD) for Pd/C resulted in higher conversion rates. Operation at lower contact time for multiple Pd/Al2O3 beds in series promoted exclusive formation of benzylamine at an appreciably higher rate than reported in the literature.",

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AU - Hao, Yufen

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AU - Cárdenas-Lizana, Fernando

AU - Keane, Mark A

PY - 2016/1

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N2 - The continuous gas phase hydrogenation of benzonitrile has been studied over Pd/C and Pd/Al2O3 (mean Pd size = 2.5–3.0 nm from STEM). Toluene was the predominant product over Pd/C whereas benzylamine was preferred over Pd/Al2O3. This is linked to differences in Pd electronic character (from XPS) that impact on nitrile adsorption. Greater surface acidity and hydrogen availability (based on chemisorption/TPD) for Pd/C resulted in higher conversion rates. Operation at lower contact time for multiple Pd/Al2O3 beds in series promoted exclusive formation of benzylamine at an appreciably higher rate than reported in the literature.

AB - The continuous gas phase hydrogenation of benzonitrile has been studied over Pd/C and Pd/Al2O3 (mean Pd size = 2.5–3.0 nm from STEM). Toluene was the predominant product over Pd/C whereas benzylamine was preferred over Pd/Al2O3. This is linked to differences in Pd electronic character (from XPS) that impact on nitrile adsorption. Greater surface acidity and hydrogen availability (based on chemisorption/TPD) for Pd/C resulted in higher conversion rates. Operation at lower contact time for multiple Pd/Al2O3 beds in series promoted exclusive formation of benzylamine at an appreciably higher rate than reported in the literature.

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DO - 10.1007/s10562-015-1655-8

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VL - 146

SP - 109

EP - 116

JO - Catalysis Letters

JF - Catalysis Letters

IS - 1

ER -

Selective production of benzylamine via gas phase hydrogenation of benzonitrile over supported Pd catalysts

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