Materials for Chemical-Looping with Oxygen Uncoupling

Figure 4

Principal layout of chemical-looping with oxygen uncoupling (CLOU). The oxygen carrier is denoted by Me_𝑥O_𝑦 and Me_𝑥O_𝑦−1, where Me_𝑥O_𝑦 is a metal oxide and Me_𝑥O_𝑦−1 is a metal or a metal oxide with lower oxygen content compared to Me_𝑥O_𝑦. The fuel is here carbon (C). A fluidization gas, for example, recirculated CO₂ or steam, is most likely needed for the case of solid fuel.