Catalytic pyrolysis of biomass by novel nanostructured catalysts

Nanostructured catalysts were successfully prepared by acidification of diatomites and the regeneration of used FCC catalysts. The obtained samples were characterized by IR, XRD, SEM, EDX, MAS-NMR (27Al and 29Si), NH3-TPD and tested in catalytic pyrolysis of biomass (rice straw). The results showed that the similar bio-oil yield of 41,4% can be obtained by pyrolysis in presence of catalysts at 450°C as compared to that of the pyrolysis without catalyst at 550°C. The bio-oil yield reached a maximum of 42,55 % at the pyrolysis temperature of 500°C with catalytic content of 20%. Moreover, by catalytic pyrolysis, bio-oil quality was better as reflected in higher ratio of H/C, lower ratio of O/C. This clearly indicated high application potential of these new nanostructured catalysts in the production of bio-oil with low oxygenated compounds.

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