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- W2328475823 abstract "A solar cavity-receiver containing a reticulated porous ceramic (RPC) foam made of pure CeO2 has been experimentally investigated for CO2 splitting via thermochemical redox reactions. The RPC was directly exposed to concentrated thermal radiation at mean solar flux concentration ratios of up to 3015 suns. During the endothermic reduction step, solar radiative power inputs in the range 2.8–3.8 kW and nominal reactor temperatures from 1400 to 1600 °C yielded CeO2−δ with oxygen deficiency δ ranging between 0.016 and 0.042. In the subsequent exothermic oxidation step at below about 1000 °C, CeO2−δ was stoichiometrically reoxidized with CO2 to generate CO. The solar-to-fuel energy conversion efficiency, defined as the ratio of the calorific value of CO (fuel) produced to the solar radiative energy input through the reactor’s aperture and the energy penalty for using inert gas, was 1.73% average and 3.53% peak. This is roughly four times greater than the next highest reported values to date for a solar-driven device. The fuel yield per cycle was increased by nearly 17 times compared to that obtained with optically thick ceria felt because of the deeper penetration and volumetric absorption of high-flux solar irradiation." @default.
- W2328475823 created "2016-06-24" @default.
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- W2328475823 date "2012-10-24" @default.
- W2328475823 modified "2023-10-10" @default.
- W2328475823 title "Solar Thermochemical CO<sub>2</sub> Splitting Utilizing a Reticulated Porous Ceria Redox System" @default.
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- W2328475823 doi "https://doi.org/10.1021/ef3013757" @default.
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