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Characterization of Pt/SiO2 Model Catalysts at UHV and Near Atmospheric Pressures

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Abstract
Pt/SiO2 model catalyst samples, prepared under UHV conditions in a contiguous high pressure reactor cell
surface analysis chamber, have been characterized via CO oxidation reaction kinetics under elevated pressure conditions (approaching 1 atm). Reaction kinetics are studied as a function of Pt coverage (hPt = 1–10 mL), along with measurements on a Pt(110) single crystal for direct comparison. CO desorption measurements and STM measurements on Pt/SiO2 films at T = 300 K have been obtained at various hPt. Kinetic results show agreement between observations on single crystal and catalyst samples, and general agreement and correlation is obtained for site calculations across the various methods. Results demonstrate the utility of well characterized model catalyst samples in obtaining qualitative and quantitative reactivity data at elevated pressures.

Keywords: Pt/SiO2 model catalyst
Pt particles
CO oxidation

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Ketersediaan

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Informasi Detail

Judul Seri

Catalysis Letter

No. Panggil

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Penerbit

New York : Springer Science Business Media., 2009

Deskripsi Fisik

Catal Lett (2009) 133:298–306

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

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