Palladium nanoparticle microemulsions: Formation and use in catalytic hydrogenation of o-chloronitrobenzene

The formation and catalytic properties of well-dispersed palladium (Pd) nanoparticles in water-in-oil (w/o) microemulsions containing octadecyl amine polyoxyethylene ether (OAPE-5) and hydrogenated tallow amine (HTA) have been investigated. The size and structure of the nanoparticles were characteri...

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Published inChemical engineering journal (Lausanne, Switzerland : 1996) Vol. 165; no. 2; pp. 709 - 713
Main Authors Liang, Chunhua, Han, Jianguo, Shen, Kaihua, Wang, Legang, Zhao, Defeng, Freeman, Harold S.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier B.V 01.12.2010
Elsevier
Subjects
Applied sciences
Catalysis
Catalysts
Catalytic reactions
Chemical engineering
Chemistry
Exact sciences and technology
General and physical chemistry
Hydrogenation
Microemulsion
Microemulsions
Nanoparticles
Nanostructure
o-Chloronitrobenzene
Palladium
Palladium nanoparticles
Reactors
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Transmission electron microscopy
o-Chloronitrobenzene
Microemulsion
Palladium nanoparticles
Hydrogenation
Particle size
Catalytic reaction
Transmission electron microscopy
Nanoparticle
Fourier-transformed infrared spectrometry
Surfactant
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Summary:The formation and catalytic properties of well-dispersed palladium (Pd) nanoparticles in water-in-oil (w/o) microemulsions containing octadecyl amine polyoxyethylene ether (OAPE-5) and hydrogenated tallow amine (HTA) have been investigated. The size and structure of the nanoparticles were characterized by TEM and XRD analyses and the effects of microemulsion composition on particle sizes were assessed using FTIR spectroscopy. The results of TEM and XRD indicated that the particles were of a face centered cubic structure form and their mean diameter was 10 nm. Results of FTIR analysis indicated strong interactions between Pd nanoparticles and surfactant molecules. Use of these Pd nanoparticles for the hydrogenation of o-chloronitrobenzene in the presence of alkali produced a 3:1 ratio of aniline to o-chloroaniline and none of the frequently observed nitrobenzene or 2,2′-dichlorohydrazoebenzene.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2010.10.022