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Optimized catalyst for biomass gasification into synthetic fuels
Source : greencarcongress.com
A team from the Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences reports on a pilot-scale biomass-gasification-reforming system with optimized catalyst to produce synthesis gas for liquid fuel synthesis in the ACS journal Energy & Fuels. Gasification of biomass in a fluidized-bed gasifier produces a raw fuel gas (a mixture of H2, CO, CO2, CH4, C2+, N2, H2O, etc.), accompanied by the formation of tar and fly ash. To fulfill the stoichiometric requirement of synthesis gas for the production of methanol, dimethyl ether, or Fischer-Tropsch diesel, the raw gas - which usually has a low H2/CO ratio - requires reforming of CH4, tar, and other light hydrocarbons and adjustment of the H2/CO ratio. While commercial nickel-based catalysts are very effective in the elimination of biomass tar and its conversion to H2 and CO, the quick deactivation of the nickel-based catalyst by carbon deposition and sintering of active Ni particles seriously impedes its application. A number of novel catalyst approaches are being tried to address this issue.
read more ...
9 February 2011 |
Research ::
Biofuels ::
Asia
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