Gas phase hydrogenation of m-dinitrobenzene over alumina supported Au and Au-Ni alloy

Fernando Cardenas-Lizana; Santiago Gomez-Quero; Mark A. Keane

doi:10.1007/s10562-008-9660-9

Gas phase hydrogenation of m-dinitrobenzene over alumina supported Au and Au-Ni alloy

Fernando Cardenas-Lizana, Santiago Gomez-Quero, Mark A. Keane

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

39 Citations (Scopus)

Abstract

We report, for the first time, 100% selectivity in the continuous gas phase hydrogenation of m-dinitrobenzene to m-nitroaniline (m-NAN) over Au/Al ₂O₃. The synthesis and application of an alumina supported Au-Ni alloy is also described where alloy formation is demonstrated by XRD, diffuse reflectance UV-Vis and HRTEM analyses. Under the same reaction conditions, Au/Al₂O₃ delivered a higher (by close to an order of magnitude) hydrogenation rate compared with the alloy. Au-Ni/Al ₂O₃ promoted the formation of both m-NAN and m-phenylenediamine, i.e. partial and complete hydrogenation: the results are consistent with a stepwise reduction mechanism.

Original language	English
Pages (from-to)	25-32
Number of pages	8
Journal	Catalysis Letters
Volume	127
Issue number	1-2
DOIs	https://doi.org/10.1007/s10562-008-9660-9
Publication status	Published - Jan 2009

Keywords

Au-Ni/Al 2 O 3
Au/Al 2 O 3
M-dinitrobenzene
Selective hydrogenation
Supported alloy

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10.1007/s10562-008-9660-9

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title = "Gas phase hydrogenation of m-dinitrobenzene over alumina supported Au and Au-Ni alloy",

abstract = "We report, for the first time, 100% selectivity in the continuous gas phase hydrogenation of m-dinitrobenzene to m-nitroaniline (m-NAN) over Au/Al 2O3. The synthesis and application of an alumina supported Au-Ni alloy is also described where alloy formation is demonstrated by XRD, diffuse reflectance UV-Vis and HRTEM analyses. Under the same reaction conditions, Au/Al2O3 delivered a higher (by close to an order of magnitude) hydrogenation rate compared with the alloy. Au-Ni/Al 2O3 promoted the formation of both m-NAN and m-phenylenediamine, i.e. partial and complete hydrogenation: the results are consistent with a stepwise reduction mechanism.",

keywords = "Au-Ni/Al 2 O 3, Au/Al 2 O 3, M-dinitrobenzene, Selective hydrogenation, Supported alloy",

author = "Fernando Cardenas-Lizana and Santiago Gomez-Quero and Keane, {Mark A.}",

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T1 - Gas phase hydrogenation of m-dinitrobenzene over alumina supported Au and Au-Ni alloy

AU - Cardenas-Lizana, Fernando

AU - Gomez-Quero, Santiago

AU - Keane, Mark A.

PY - 2009/1

Y1 - 2009/1

N2 - We report, for the first time, 100% selectivity in the continuous gas phase hydrogenation of m-dinitrobenzene to m-nitroaniline (m-NAN) over Au/Al 2O3. The synthesis and application of an alumina supported Au-Ni alloy is also described where alloy formation is demonstrated by XRD, diffuse reflectance UV-Vis and HRTEM analyses. Under the same reaction conditions, Au/Al2O3 delivered a higher (by close to an order of magnitude) hydrogenation rate compared with the alloy. Au-Ni/Al 2O3 promoted the formation of both m-NAN and m-phenylenediamine, i.e. partial and complete hydrogenation: the results are consistent with a stepwise reduction mechanism.

AB - We report, for the first time, 100% selectivity in the continuous gas phase hydrogenation of m-dinitrobenzene to m-nitroaniline (m-NAN) over Au/Al 2O3. The synthesis and application of an alumina supported Au-Ni alloy is also described where alloy formation is demonstrated by XRD, diffuse reflectance UV-Vis and HRTEM analyses. Under the same reaction conditions, Au/Al2O3 delivered a higher (by close to an order of magnitude) hydrogenation rate compared with the alloy. Au-Ni/Al 2O3 promoted the formation of both m-NAN and m-phenylenediamine, i.e. partial and complete hydrogenation: the results are consistent with a stepwise reduction mechanism.

KW - Au-Ni/Al 2 O 3

KW - Au/Al 2 O 3

KW - M-dinitrobenzene

KW - Selective hydrogenation

KW - Supported alloy

U2 - 10.1007/s10562-008-9660-9

DO - 10.1007/s10562-008-9660-9

M3 - Article

SN - 1011-372X

VL - 127

SP - 25

EP - 32

JO - Catalysis Letters

JF - Catalysis Letters

IS - 1-2

ER -

Gas phase hydrogenation of m-dinitrobenzene over alumina supported Au and Au-Ni alloy

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