Abstract
The mechanism of WGSR has been studied on an Fe−Cr catalyst. Although after reaction (from 250 to 400°C) formate species have been characterized on the Fe−Cr catalyst, by chemical trapping, TPD studies after reaction and after HCOOH adsorption have shown that formates are not the main intermediates. The disproportionation of CO or the regenerative mechanism seems to be more probable.
Abstract
Исследовали механизм реакции CO+H2O→CO2+H2 на катализаторе Fe−Cr. Хотя после реакции (от 250 до 400°C) формиатные образования на катализаторе Fe−Cr характеризовали с помощью химических ловушек, однако, ТПД исследования после реакции и после адсорбции свидетельствовали о том, что формиаты не являются основными промежуточными продуктами. Наиболее вероятными кажутся диспропорционирование CO или регенеративный механизм.
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G.C. Chinchen, M.S. Spencer, K.W. Waugh, D.A. Whan: J. Chem. Soc., Faraday Trans. I,83, 2193 (1987)
F.M. Gottschalk, R.G. Copperthwaite, M. Van der Riet, G.J. Hutchings: Appl. Catal.,38, 103 (1988)
F.M. Gottschalk, G.J. Hutchings: J. Chem. Soc., Chem. Commun., 123 (1988)
G.J. Hutchings, F.M. Gottschalk, R. Hunter, S.W. Orchard: J. Chem. Soc., Faraday Trans. I,85, 363 (1989)
G. Doppler, A.X. Trautwein, H.M. Ziethen, F. Ambach, R. Lehnert, M.J. Sprague, U. Gonser: Appl. Catal.,40, 119 (1988)
C.T. Campbell, K.A. Daube: J. Catal.,104, 109 (1987)
M. Tinkle, J.A. Dumesic: J. Catal.,103, 65 (1987)
A. Deluzarche, J.P. Hindermann, A. Kiennemann, R. Kieffer: J. Mol. Catal.,31, 225 (1985)
R.J. Madix, J.L. Gland, G.E. Mitchell, B.A. Sexton: Surf. Sci.,125, 481 (1983)
J.L. Falconer, L.C. Burger, I.P. Corfa, K.G. Wilson: J. Catal.,104, 424 (1987)
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Diagne, C., Vos, P.J., Kiennemann, A. et al. Water-gas shift reaction over chromia-promoted magnetite. Use of temperature-programmed desorption and chemical trapping in the study of the reaction mechanism. React Kinet Catal Lett 42, 25–31 (1990). https://doi.org/10.1007/BF02137613
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DOI: https://doi.org/10.1007/BF02137613