(36a) Chemical Looping for Reactive Separation

In this talk we will report on challenges and recent advances in calcium oxide based CO₂ sorbents (calcium looping). Alkaline earth metal oxides, such as CaO and MgO are an interesting class of CO₂ sorbents as their theoretical CO₂ uptake is very high. However, to obtain materials that show a high CO₂ uptake over many capture and regeneration cycles the structure and surface properties of the materials have to fulfill a number of criteria. As alkaline earth metal oxides capture CO₂ at elevated temperatures, these CO₂ sorbents can be integrated into catalytic processes. The so-called sorbent enhanced steam methane reforming will be presented as an example.