Development of catalysts suitable for hydrogen or syn-gas production from biomass gasification

Tri-metallic and ternary oxide structures were prepared, characterised and tested for two fixed-bed catalytic applications: the reforming of methane with steam and CO 2; and for conditioning the gas produced by biomass steam gasification in a fluidised bed of olivine particles, with the aim of drast...

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Bibliographic Details
Published in:Biomass & bioenergy 2002-01, Vol.22 (5), p.377-388
Main Authors: Rapagná, S., Provendier, H., Petit, C., Kiennemann, A., Foscolo, P.U.
Format: Article
Language:English
Subjects:
Biomass gasification
Fluidisation
Olivine bed inventory
Perovskite oxides
Tar reforming
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Summary:Tri-metallic and ternary oxide structures were prepared, characterised and tested for two fixed-bed catalytic applications: the reforming of methane with steam and CO 2; and for conditioning the gas produced by biomass steam gasification in a fluidised bed of olivine particles, with the aim of drastically reducing high and low molecular weight hydrocarbon concentrations in the product gas. Methane conversions higher than 90% were achieved for a synthetic gas feed mixture (similar of that produced in biomass gasification) using the catalyst formulation LaNi 0.3Fe 0.7O 3 at 800°C: the space time under reaction conditions was 0.05 s, and no carbon was formed for reaction periods of up to 150 h . The catalyst contained in a secondary fixed-bed reactor placed after the gasifier was able to convert about 90% by weight of the tar present in the raw gas at 800°C: the space time under reaction conditions was 0.45 s , during which time no coke formation was observed on the catalyst surface.
ISSN:0961-9534
1873-2909
DOI:10.1016/S0961-9534(02)00011-9