화학공학소재연구정보센터
Industrial & Engineering Chemistry Research, Vol.59, No.15, 6924-6930, 2020
Spinel-Structured Ternary Ferrites as Effective Agents for Chemical Looping CO2 Splitting
Reverse water gas shift on the basis of chemical looping technology provides a viable method for efficiently converting CO2 to CO for hydrocarbons at moderate temperature (<750 degrees C). However, the commonly available oxygen carrier materials are insufficiently active because of the degrading effect at relatively low temperatures. In this paper, we present several Co, Mn codoped ferrites in search of oxygen carrier materials as highly active redox materials for a midtemperature chemical looping CO2 splitting process. The results show that up to similar to 142.3 mu mol.g(-1). min(-1) of CO production rate and similar to 8.8 mmol.g(-1) of CO yield are achieved by Mn0.2Co0.8Fe2O4 at 650 degrees C. The production rate and yield of CO of the codoped ferrites during the CO2 splitting process are comparable to those of the state-of-the-art perovskites which commonly contain rare-metal elements.