Publications by authors named "Yuelun Li"
Article Synopsis
- The study uses density functional theory (DFT) to examine how low oxygen vacancy formation energy affects the catalytic performance of chemical looping dry reforming of methane (CL-DRM) when metal ions Zn and Nd are co-substituted on CeO(111) surfaces.
- Results show that the co-substituted surfaces have a very low oxygen vacancy formation energy (-2.05 eV), enhancing the CH conversion process compared to pristine surfaces, with the rate-limiting step being the dehydrogenation of CH.
- However, while the co-substituted surfaces promote better reaction performance, high energy is required for syngas desorption and CO selectivity is reduced, indicating a balance is needed to prevent excessive
The traditional partial oxidation, dry reforming and steam reforming of methane technologies are separated into two reactors for execution by chemical looping technology, which can avoid the defects exposed in the traditional process (avoiding carbon accumulation, reducing costs, ). The key to chemical looping technology is to find suitable oxygen carriers (OCs), which can store and release oxygen to form a closed loop in the chemical looping. The purpose of this review is to summarize the current status of perovskite oxides for partial oxidation and reforming of methane in chemical looping, describe the structure, oxygen capacity, oxygen migration rate and common synthesis methods of perovskites in chemical looping.
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