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Towards sustainability: a new, solid-state synthetic route for supported metal nanocatalysts

Sanyal, Udishnu and Kalidindi, Suresh Babu and Nair, Sharika and Jagirdar, Balaji R (2012) Towards sustainability: a new, solid-state synthetic route for supported metal nanocatalysts. In: Current Science (Bangalore), 102 (1). pp. 78-84.

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Abstract

Noble metal ions like Pt(IV) and Pd(II) were impregnated on gamma-alumina and aerosol 300 silica surfaces. Reduction of these ions using ammonia borane in the solid state resulted in the formation of the respective metal nanoparticles embedded in BNHx polymer which is dispersed on the oxide support. Removal of the BNH polymer was accomplished by washing the samples repeatedly with methanol. In this process the polymer undergoes solvolysis to release H-2 accompanied by the formation of ammonium methoxy borate salt, which has been removed by repeated methanol washings. As a result, metal nanoparticles well dispersed on gamma-alumina and aerosol 300 silica were obtained. These samples have been characterized by a combination of techniques, including electron microscopy, powder X-ray diffraction, NMR spectroscopy and surface area analyser.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Alumina;nanocatalysts;noble metal ions;silica
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 13 Mar 2012 12:02
Last Modified: 13 Mar 2012 12:02
URI: http://eprints.iisc.ernet.in/id/eprint/43855

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