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Effect of boron on the stability of Ni catalysts during steam methane reforming

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Abstract.
Ni catalysts promoted with 0.5 and 1.0 wt% boron were synthesized, characterized and tested during
steam methane reforming, to evaluate the effect of boron on the deactivation behavior. Boron adsorbs
on the γ -Al2O3 support and on the Ni particles and 1.0 wt% boron is found to enhance the stability
without compromising the activity. Catalytic studies at 800 ◦C, 1 atm, a stoichiometric methane to steam
ratio, and space velocities of 330,000 cm3/(h gcat) show that promotion with 1.0 wt% boron reduces
the rate of deactivation by a factor of 3 and increases the initial methane conversion from 56% for the
unpromoted catalyst to 61%. Temperature-programmed oxidation (TPO) and scanning electron microscopy
(SEM) studies confirm the formation of carbonaceous deposits and illustrate that 1.0 wt% boron reduces
the amount of deposited carbon by 80%.

Keywords:
Boron
Ni catalyst
Steam reforming
Carbon deposition
Catalyst deactivation

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Informasi Detail

Judul Seri

Journal of Catalysis

No. Panggil

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Penerbit

London : Elsevier Inc.., 2009

Deskripsi Fisik

Journal of Catalysis 261 (2009) 158–165

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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