Catalytic Properties of Small Ruthenium Particles Supported on Carbon. Studies of Carbon Monoxide Methanation

• Autorzy: Kowalczyk Z. , Stołecki K. , Raróg-Pilecka W. , Miśkiewicz E. , Wilczkowska E. , Karpiński Z.
• Języki publikacji: EN

Abstrakty

EN

A series of carbon-supported ruthenium catalysts were prepared and tested in the reaction of CO methanation, with the reaction mixtures characterized by very high H2-to-CO ratios. The effect of Ru particle size on the reaction rate was examined, using large surface area graphitized carbon of high purity as a support for the metal. The kinetic studies of methanation combined with chemisorption experiments have shown that the surfacebased reaction rate expressed as a turn-over frequency TOF is controlled by the size of ruthenium particles and is the higher the larger the Ru particles are: an about six-fold increase in Ru crystal diameter (from 1 to 6 nm) results in almost a 20-fold increase in (TOF).

Słowa kluczowe

EN

carbon oxide methanation; ruthenium/carbon catalyst; ruthenium dispersion; effect of metal particle size

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2008
• Tom: Vol. 82, nr 3
• Strony: 607--612
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Kowalczyk Z.

autor

Stołecki K.

autor

Raróg-Pilecka W.

autor

Miśkiewicz E.

autor

Wilczkowska E.

autor

Karpiński Z.

• Warsaw University of Technology, Faculty of Chemistry, Noakowskiego 3, 00-664 Warsaw, Poland Fax: [phone],

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