Carbon dioxide conversion is a major challenge because of thermodynamic and kinetic limitations, which leads to slow rates and/or extreme operating conditions. A chemical looping approach entitled reverse water gas shift chemical looping (RWGS-CL) has been designed and developed to convert carbon dioxide to carbon monoxide, which can be used as the backbone for various fuels and chemicals. By employing perovksite-type oxides as oxygen carriers, the reaction rates are higher than other CO<sub>2</sub> conversion routes while also occurring at moderate temperatures (500 – 800°C). Although this process requires hydrogen, the sun-to-fuel efficiencies are higher compared to other emerging technologies when solar energy is used as the energy source for electrolysis. In this contribution, various formulations of perovskite-type oxides and composite materials containing perovskite-type oxides have been examined experimentally and computationally to determine structure-function relations in these candidate materials.<br/>

Thermochemical conversion of carbon dioxide by reverse water-gas shift chemical looping using perovskite-type oxides

254th National Meeting (2017)

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