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Simultaneous production of hydrogen and multi-walled carbon nanotubes by ethanol decomposition over Ni/Al2O3 catalysts

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Abstract.
Ethanol decomposition was studied over Ni/Al2O3 catalysts with different Ni loadings (10–90 mol%) at
temperatures between 500 and 800 oC to produce hydrogen and multi-walled carbon nanotubes
(MWCNTs) at the same time. The hydrogen production increased with increasing temperature and Ni
loadings. However, both the quality and the quantity of the nanotubes formed at the relatively high
temperatures of 700 and 800 oC decreased due to sintering of the Ni particles. The Ni (80 mol%)/Al2O3 was
the most effective catalyst for ethanol decomposition into hydrogen (the maximum H2 yield of 83%) and
MWCNTs (themaximum deposited yield of 80%) at 600 oC. Carbon nanofibers (CNFs) and MWCNTs were
observed simultaneously on Ni (90 mol%)/Al2O3 at 500 oC. Several possible reactions also were proposed
to explain ethanol decomposition to produce hydrogen and carbon (including nanotube), etc., at the same
time.

Keywords: Ethanol decomposition, Ni/Al2O3, Hydrogen, Carbon nanotubes, Carbon nanofibers

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Informasi Detail

Judul Seri

Applied Catalysis B: Environmental

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis B: Environmental 88 (2009) 142–151

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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