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Water-gas shift reaction over chromia-promoted magnetite. Use of temperature-programmed desorption and chemical trapping in the study of the reaction mechanism

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.


Auteur(s) : C. DiagneP. J. VosA. KiennemannM. J. PerrezM. F. Portela
Pages : 25–31
Année de publication : 1990
Revue : Reactions Kinetics and Catalysis
N° de volume : 42
Type : Article
Mise en ligne par : DIAGNE Cheikh Talibouya