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- W2085321866 abstract "Highly reactive and mechanically strong low-cost regenerable MgO-based sorbents were prepared by modification of dolomite which involved partial calcinations followed by impregnation with a potassium-based salt. The sorbents are capable of removing CO2 from gasification-based processes such as Integrated Gasification Combined Cycle (IGCC). The sorbents have high reactivity and good capacity toward CO2 absorption in the temperature range of 300–450 °C at 20 atm. and can be easily regenerated at 500 °C. The reaction appears to be first order with respect to CO2 concentration with an activation energy of 44 kJ/mol. The reactivity and the absorption capacity of the sorbents increase with increasing temperature, as long as the partial pressure of CO2 is above the equilibrium value for sorbent carbonation. The reactivity of the sorbents appears to improve in the presence of steam, which is likely due to the increase in the BET surface area and the porosity of the sorbent. A two-zone expanding grain model, consisting of a high-reactivity outer shell and a low-reactivity inner core is shown to provide an excellent fit to the TGA experimental data on sorbent carbonation at various operating conditions." @default.
- W2085321866 created "2016-06-24" @default.
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- W2085321866 date "2010-06-01" @default.
- W2085321866 modified "2023-10-02" @default.
- W2085321866 title "Regenerable MgO-based sorbents for high-temperature CO2 removal from syngas: 1. Sorbent development, evaluation, and reaction modeling" @default.
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- W2085321866 doi "https://doi.org/10.1016/j.fuel.2009.11.017" @default.
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