Chemical Looping Combustion for Coupling with Efficient CO₂ Capture and Utilization: Stable Oxygen Carriers and Carbon Cycle

Abstract

High Resolution Image Download MS PowerPoint Slide The capture of CO 2 with chemical looping combustion (CLC) offers a novel approach to significantly reduce carbon emissions while simultaneously utilizing captured CO 2 as a valuable resource by leveraging its inherent CO 2 separation capability. The separation of CO 2 in CLC technology achieves low-cost CO 2 capture through the utilization of highly efficient oxygen carriers (OC), enabling the coupling of CO 2 capture with subsequent hydrogenation reactions for high-value-added chemical production. This review comprehensively summarizes the principle of the CLC technology, the current status of OC research, and the potential for CO 2 capture in chemical synthesis, providing theoretical insights into the feasibility of activating and utilizing CO 2 within practical industrial processes. The stable OC brought about excellent properties and higher application value in the long term operation. The careful selection of a stable OC and the rational design of oxygen vacancies are the keys to enable this technology; however, further research is needed to develop a highly efficient and stable OC to optimize the CO 2 capture efficiency and product yields while elucidating the underlying reaction mechanisms.