Surface species investigation of Ni-Fe catalysts of CO₂ hydrogenation by TD MS analysis

The condition of Ni-Fe catalysts’ surface was investigated by the method of thermally programmed desorption with mass spectral analysis of desorbed particles (TD MS). TD spectra indicated the desorption of CO₂ (m/z = 44), CO (m/z = 28) and H₂O (m/z = 18) particles from the surface of samples with hi...

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Bibliographic Details
Date:2017
Main Authors: Meshkini Far, R., Dyachenko, A., Bieda, O., Ischenko, O.
Format: Article
Language:English
Published: Інститут хімії поверхні ім. О.О. Чуйка НАН України 2017
Series:Поверхность
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Online Access:http://dspace.nbuv.gov.ua/handle/123456789/148534
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Surface species investigation of Ni-Fe catalysts of CO₂ hydrogenation by TD MS analysis / R. Meshkini Far, A. Dyachenko, O. Bieda, O. Ischenko // Поверхность. — 2017. — Вип. 9 (24). — С. 104-110. — Бібліогр.: 15 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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Summary:The condition of Ni-Fe catalysts’ surface was investigated by the method of thermally programmed desorption with mass spectral analysis of desorbed particles (TD MS). TD spectra indicated the desorption of CO₂ (m/z = 44), CO (m/z = 28) and H₂O (m/z = 18) particles from the surface of samples with high and low catalytic activity in the reaction of CO₂ hydrogenation. Intermediate compounds CHO*, CH₂O* were not observed in the TD profiles for all investigated catalysts. On the basis of catalytic performance results and thermal desorption data it can be suggested that process of CO₂ hydrogenation over Ni-Fe catalysts proceeds via direct hydrogenation of CO₂ to CH₄.