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Ethanol steam reforming over Co-based catalysts: Role of oxygen mobility

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Abstract.
The effect of oxygen mobility on the bio-ethanol steam reforming of ZrO2- and CeO2-supported cobalt
catalysts was investigated. The supported catalysts were prepared by incipient wetness impregnation
(IWI) and characterized through N2 physisorption, X-ray photoelectron spectroscopy, temperature
programmed oxidation, laser Raman spectroscopy, diffuse reflectance infrared Fourier transform spectroscopy,
O2 pulse chemisorption, isotopic labeling, and transmission electron microscopy techniques at
various life stages of the catalyst. The results indicated that the catalyst deactivation was due mostly to
deposition of various types of carbon on the surface although cobalt sintering could also be contributing
to the deactivation. The addition of ceria was found to improve the catalytic stability as well as activity,
primarily due to the higher oxygen mobility of ceria.

Keywords:
Cobalt catalyst
Zirconia
Ceria
Bio-ethanol steam reforming
Deactivation
Carbon deposition
Carbon nanofiber
Oxygen mobility

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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) 66–74

Bahasa

English

ISBN/ISSN

00219517

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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