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Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
53185 46921 2006 5 PDF Available
Title
Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst
Abstract

The activities of Rh–Mg/Al2O3, Pt/ZrO2 and the physically mixed catalyst of these catalysts were investigated for the autothermal reforming of methane. A hysterisis of autothermal reforming of methane on Rh–Mg/Al2O3 was observed with cycles of reaction temperature increase and decrease. However, the hysterisis was restrained on the mixed catalyst of Rh–Mg/Al2O3 and Pt/ZrO2 which showed high methane conversion the same as almost thermodynamic equilibrium. The superior activity of the mixed catalyst results from hydrogen generated on the Pt/ZrO2 at 400 °C. This reductive gas of hydrogen reduces Rh element of Rh–Mg/Al2O3 catalyst. The mixed catalyst showed excellent durability for 100 h and maintained its activity. This catalyst was not deactivated after re-oxidizing with air at low temperature.

Keywords
Autothermal reforming; Rh–Mg/Al2O3; Pt/ZrO2; Physically mixed catalyst; Hysterisis
First Page Preview
Restrained hysterisis of methane conversion during autothermal reforming with the physically mixed catalyst
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 1, January 2006, Pages 42–46
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis