Activity and stability enhancement of Ni-MCM-41 catalysts by Rh incorporation for hydrogen from dry reforming of methane

Ni incorporated and Ni–Rh incorporated bimetallic MCM-41 like mesoporous catalysts, which were synthesized following a one-pot hydrothermal procedure, showed very high activity in dry reforming of methane. Among the Ni incorporated catalysts, Ni-MCM-41-V, with a Ni/Si ratio of 0.19, showed the best...

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Bibliographic Details
Published in:International journal of hydrogen energy 2010-03, Vol.35 (6), p.2296-2304
Main Authors: Arbag, Huseyin, Yasyerli, Sena, Yasyerli, Nail, Dogu, Gulsen
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Applied sciences
Catalysis
Catalyst stability
Catalysts
Dry reforming
Drying
Energy
Exact sciences and technology
Fuels
Hydrogen
Ni-MCM-41
Nickel
Reforming
Rh–Ni-MCM-41
Shift reaction
Stability
Water gas
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Summary:Ni incorporated and Ni–Rh incorporated bimetallic MCM-41 like mesoporous catalysts, which were synthesized following a one-pot hydrothermal procedure, showed very high activity in dry reforming of methane. Among the Ni incorporated catalysts, Ni-MCM-41-V, with a Ni/Si ratio of 0.19, showed the best catalytic performance. Rh incorporation into this catalyst by the one-pot procedure improved both activity and time on stream stability of the catalyst. However, Rh incorporation by impregnation caused instabilities due to coke formation, after about 11 h of reaction time. Occurrence of reverse water gas shift reaction caused higher CO selectivity than H 2 selectivity, with the Ni incorporated catalysts. Rh incorporation into these catalysts decreased the relative significance of reverse water gas shift reaction, with respect to dry reforming reaction.
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2009.12.109