Chemical Looping Combustion for Coupling with Efficient CO<sub>2</sub> Capture and Utilization: Stable Oxygen Carriers and Carbon Cycle
Yanan Zhang, Hongjing Han, Nini Zhu, Yu Che, Xiaodan Zhang, Yan Xue, Jitong Deng, Chunfei Wu, Haiying Wang, Yanguang Chen, Shouliang Yi
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.