出版社：Chinese Association for Aerosol Research in Taiwan
摘要：Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3 oxygen carriers were fabricated and evaluated for chemicallooping hydrogen generation (CLHG) using a TGA system and a fixed-bed reactor. Oxygen carrierswere converted to around 33% in a fixed-bed reactor to ensure uniform reduction. The reducedoxygen carrier was tested for steam generation, where in all cases Fe2O3/Al2O3 displayed a betterconversion than Fe2O3/TiO2/Al2O3. It was found that increasing the reaction temperature from800 to 850 °C had little effect for either oxygen carrier, but a further increase to 900°C resultedin an increased steam conversion. A higher steam flow rate caused a lower overall steamconversion but a higher H2 production. A higher feed rate of reduced oxygen carrier let to a highersteam conversion up to a rate of 18.4 and 14.9 g min–1for Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3,respectively. A final comparison was performed with up to 50 redox cycles, where Fe2O3/Al2O3showed superior reactivity in the first cycles but ended at a conversion of 54.6% withFe2O3/TiO2/Al2O3 ending at a conversion of 64.6%.
