Promotion of Fe3O4/Cr2O3 high temperature water gas shift catalyst
2002; Elsevier BV; Volume: 3; Issue: 8 Linguagem: Inglês
10.1016/s1566-7367(02)00156-5
ISSN1873-3905
AutoresColin Rhodes, B. Peter Williams, Frank D. King, Graham J. Hutchings,
Tópico(s)Thermal and Kinetic Analysis
ResumoThe promotion of Fe3O4/Cr2O3 high temperature water gas shift catalysts is described and discussed. Catalysts containing 2 wt% B, Cu, Ba, Pb, Hg and Ag are prepared by co-precipitation. B is found to poison the activity slightly whereas the other additives did increase the activity, with the relative order being Hg>Ag,Ba>Cu>Pb>unpromoted>B. The promoters decrease the activation energy of the catalyst, but the data give a linear relationship for the Constable–Cremer plot and it is concluded that CO adsorption is an important factor controlling activity.
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