Pd-coated Ni nanoparticles by the polyol method: an efficient hydrogenation catalyst

Pd-coated Ni nanoparticles of 50+15 nm size are prepared by the polyol method and characterized by X-ray diffraction, transmission electron microscopy. X-ray photoelectron spectroscopy and thermogravimetry analysis. Surface coverage of Pd on Ni particles is less than a monolayer for 0.5 and 1 at% Pd...

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Bibliographic Details
Published in:Journal of materials chemistry 2002-10, Vol.12 (10), p.3147-3151
Main Authors: NAGAVENI, K, GAYEN, Arup, SUBBANNA, G. N, HEGDE, M. S
Format: Article
Language:English
Subjects:
Applied sciences
Catalysis
Catalysts: preparations and properties
Chemistry
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
General and physical chemistry
Materials science
Metals. Metallurgy
Nanoscale materials and structures: fabrication and characterization
Physics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:Pd-coated Ni nanoparticles of 50+15 nm size are prepared by the polyol method and characterized by X-ray diffraction, transmission electron microscopy. X-ray photoelectron spectroscopy and thermogravimetry analysis. Surface coverage of Pd on Ni particles is less than a monolayer for 0.5 and 1 at% Pd-coated Ni. Quantitative conversion of nitrobenzene to aniline is observed over these Pd-coated Ni particles at 27 deg C under one atmospheric pressure of hydrogen. 0.5 and 1 at% Pd-coated Ni exhibits 10 times greater activity than that of typical colloidal palladium and platinum catalysts and 2.5 times higher activity than commercial 5 wt% Pd/C.
ISSN:0959-9428
1364-5501
DOI:10.1039/b205163j