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Effects of Catalysts in Carbon Dioxide Reforming of Methane via Corona Plasma Reactions

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The effects of two kinds of representative catalysts, Ni/Al2O3 and HZSM-5 zeolite, were investigated in the
CO2 reforming of CH4 via corona plasma reactions at atmospheric pressure. The catalysts showed little effect
on the conversions of CH4 and CO2, and we propose that rapid free-radical processes play a main role during
the plasma reactions. However, although a high-voltage electric field was used to initiate the corona discharges and many discharged particles were present within the plasma, which possibly affected the properties of the solid catalysts, Ni/Al2O3 and HZSM-5 zeolite exhibited catalytic selectivity and activity in the reactions. When the catalysts were used in the reactions, the H2/CO ratios in the products were modified, and more hydrocarbons and oxygenates were formed. It was found that a small amount of phenol was directly synthesized in the plasma reactions when HZSM-5 zeolite was used. Thermogravimetric analyses revealed that the coke depositing over the different catalysts was of different types. It is proposed that the coke over Ni/Al2O3 mainly originated from CH4 decomposition, even though a comparative portion of the coke originated from CO disproportionation. More coke deposited over HZSM-5 zeolite than over Ni/Al2O3, and it contained more hydrocarbons and oxygenates, simply reflecting the characteristics of the catalyst.

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Informasi Detail

Judul Seri

Energy & Fuels

No. Panggil

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Penerbit

New York : American Chemical Society., 2006

Deskripsi Fisik

Energy & Fuels 2006, 20, 1033-1038

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

Versi lain/terkait

Lampiran Berkas

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