Dr YAOYAO ZHENG YAOYAO.ZHENG@NOTTINGHAM.AC.UK
Nottingham Research and Anne McLaren Fellowships
Dr YAOYAO ZHENG YAOYAO.ZHENG@NOTTINGHAM.AC.UK
Nottingham Research and Anne McLaren Fellowships
Stuart A. Scott
Maintaining high CO2 uptake is critical for combined Ca-Cu looping applications, however, the long-term behaviour of combined Ca and Cu materials under repeated cycling conditions remains less understood. This study examined three materials with a fixed Cu/Ca mole ratio of 1.6 to analyse the material phase evolution and identify factors influencing CO2 uptake. The materials underwent 50 TGA cycles in two distinct looping applications: blast furnace gas (BFG) cycling (reduction-carbonation-oxidation) and flue gas cycling (carbonation-reduction-oxidation).
Different preparation methods significantly affected the initial phase distribution. The multi-grain precipitate material (MGP), prepared to minimise the chemical contact between Ca and Cu, primarily contained separate CaO and CuO phases; while the multi-stage mechanically mixed materials (MM1 and MM2), in which there was extensive contact between the Ca and Cu, exhibited mixed Ca-Cu-O phases along with separate CuO. However, the initial phase distribution had little influence on the longer-term CO2 uptake with the accessibility of CaO and cycling conditions having a more significant impact. BFG cycling consistently resulted 70–100; % greater CO2 uptake than flue gas cycling, highlighting the strong influence of cycling conditions.
Zheng, Y., & Scott, S. A. (2025). How do CaO/CuO materials evolve in integrated calcium and chemical looping cycles?. Carbon Capture Science & Technology, 15, Article 100389. https://doi.org/10.1016/j.ccst.2025.100389
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 19, 2025 |
Online Publication Date | Feb 19, 2025 |
Publication Date | 2025-06 |
Deposit Date | Apr 9, 2025 |
Publicly Available Date | Apr 9, 2025 |
Journal | Carbon Capture Science & Technology |
Electronic ISSN | 2772-6568 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 15 |
Article Number | 100389 |
DOI | https://doi.org/10.1016/j.ccst.2025.100389 |
Keywords | Chemical looping, Calcium looping, Blast furnace gas, Flue gas, CaO/CuO |
Public URL | https://nottingham-repository.worktribe.com/output/45863817 |
Publisher URL | https://www.sciencedirect.com/science/article/pii/S2772656825000296?via%3Dihub |
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