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Influence of the support on CO2 methanation over Ru catalysts: an FT-IR study

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Abstract

The hydrogenation of CO2 to methane has been investigated over Ru catalysts supported on zeolite (H-ZSM-5) and on silica. Supported Ru catalysts were very active for the hydrogenation of CO2. Ru/ZSM-5 was more selective to methane than Ru/SiO2. On the basis of FT-IR spectra of CO and CO2 adsorbed on the catalysts, it has been suggested that this behaviour can be related to a higher positive polarization of ruthenium on the zeolite. This leads to a weaker Ru–CO bond on the H-ZSM-5-supported sample with a corresponding increase of the hydrogen surface coverage that favours the transformation of the intermediate CO to methane.

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Authors and Affiliations

  1. Dipartimento di Scienze Chimiche, Università di Catania, V. le A, Doria 6, I-95125, Catania, Italy

    S. Scirè, C. Crisafulli & R. Maggiore

  2. Dipartimento di Chimica Industriale, Università di Messina, Salita Sperone 31, I-98166, Messina, Italy

    S. Minicò & S. Galvagno

Authors
  1. S. Scirè
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  2. C. Crisafulli
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  3. R. Maggiore
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  4. S. Minicò
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  5. S. Galvagno
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Scirè, S., Crisafulli, C., Maggiore, R. et al. Influence of the support on CO2 methanation over Ru catalysts: an FT-IR study. Catalysis Letters 51, 41–45 (1998). https://doi.org/10.1023/A:1019028816154

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