e-journal

Synthesis and characterization of carbon-supported nanoparticles for catalytic applications

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Abstract.
Metallic and carburized tungsten nanoparticles have been prepared using WCl6 as precursor.
The synthesis steps lead from tungsten hexachloride to tungsten carbide following the
sequence WCl6 - W0 - a-W2C - WC. These different compounds have been mainly characterized
by X-ray diffraction, TEM observations and adsorption measurements. The total
reduction of tungsten hexachloride can be completed at T = 973 K. The carburizing of the
metallic lattice into carbide WC is observed at 1223 K although incomplete. At this temperature,
crystal growth phenomena appear which are not desired for catalysis applications.
The synthesis of nanoparticles supported on activated carbon is accompanied by a
decrease of the specific surface area of samples, especially during high temperature
carburizing.

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Informasi Detail

Judul Seri

C A R B ON

No. Panggil

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Penerbit

London : Elsevier Ltd.., 2008

Deskripsi Fisik

C A R B ON 4 6 ( 2 0 0 8 ) 5 1 1 –5 1 7

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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