e-journal

Oxidation of nitric oxide to nitrogen dioxide over Ru catalysts

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Abstract.
A series of TiO2 supported catalysts were prepared by impregnation method in a rotary evaporator and
evaluated for the oxidation of NO to NO2. Among all catalysts studied, Ru/TiO2 catalyst exhibited the best
activity and a maximal NO conversion of c.a. 94% could be achieved at c.a. 275 oC at a high GHSV of
180,000 h-1. For ruthenium catalysts, the effects of supports, ruthenium loadings, pretreatment
conditions and experiment conditions (feed gas composition, GHSV) on NO oxidation to NO2 were
investigated in detail. The ruthenium catalysts were characterized by means of X-ray diffraction (XRD),
CO pulse chemisorption, transmission electron microscopy (TEM) and temperature-programmed
reduction (TPR) techniques. The active ruthenium species for NO oxidation were discussed based on the
catalytic and characterization results. Moreover, the reaction mechanism for NO oxidation over Ru/TiO2
catalyst was studied by means of in situ diffuse reflectance Fourier transform infrared spectroscopy
(DRIFTS).

Keywords: NO oxidation, Ru catalysts, TiO2, TPR

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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) 224–231

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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