Effect of Ce0.9Gd0.1O1.95 as a promoter upon the oxygen transfer properties of MgMnO3-δ-Ce0.9Gd0.1O1.95 composite oxygen carrier materials for chemical looping combustion
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Chemical looping combustion (CLC) is a promising carbon capture and storage (CCS) technology whose efficiency and costprimarily relies on the oxygen carrier materials used. In this paper, gadolinium-doped ceria (GDC, Ce0.9Gd0.1O1.95) was addedas a promoter to improve the oxygen transfer rate of MgMnO3-δ oxygen carrier materials. Increasing GDC contentsignificantly increased the oxygen transfer rate of MgMnO3-δ-GDC composites for the reduction reaction due to an increasein the surface adsorption of CH4 via oxygen vacancies formed on the surface of the GDC. On the other hand, the oxygentransfer rate for the oxidation reaction decreased linearly with increasing GDC content due to the oxygen storage ability ofGDC. Adsorbed oxygen molecules preferentially insert themselves into oxygen vacancies of the GDC lattice rather thanreacting with (Mg,Mn)O to form MgMnO3-δ during the oxidation reaction.
Abstract
Chemical looping combustion (CLC) is a promising carbon capture and storage (CCS) technology whose efficiency and costprimarily relies on the oxygen carrier materials used. In this paper, gadolinium-doped ceria (GDC, Ce0.9Gd0.1O1.95) was addedas a promoter to improve the oxygen transfer rate of MgMnO3-δ oxygen carrier materials. Increasing GDC contentsignificantly increased the oxygen transfer rate of MgMnO3-δ-GDC composites for the reduction reaction due to an increasein the surface adsorption of CH4 via oxygen vacancies formed on the surface of the GDC. On the other hand, the oxygentransfer rate for the oxidation reaction decreased linearly with increasing GDC content due to the oxygen storage ability ofGDC. Adsorbed oxygen molecules preferentially insert themselves into oxygen vacancies of the GDC lattice rather thanreacting with (Mg,Mn)O to form MgMnO3-δ during the oxidation reaction.
참고문헌 (19)
- "BP Statistical Review of World Energy" (2017)[URL]
- Q. Wang, , Renew. Sust. Energ. Rev, 30, pp.1~28 (2014)
- "International Energy Outlook" (2017)[URL]
- IPCC, "2014: Climate Change 2014: Synthesis Report", pp.151~ (2015), Intergovernmental Panel on Climate Change Press
- S.A. Rackley, "Carbon capture and storage", pp.22~ (2017), Butterworth-Heinemann Press
- Committee on America's Energy Future, "America’s Energy Future: technology and transformation", pp.431~ (2009), The National Academies Press
- S. Mukherjee, , J. Environ. Chem. Eng, 3, pp.2104~2114 (2015)
- M. Ishida, , Ind. Eng. Chem. Res, 35, pp.2469~2472 (1996)
- J. Ma, , Energy Fuels, 31, pp.1896~1903 (2017)
- B. S. Kwak, , Chem. Eng, 309, pp.617~627 (2017)
- M. M. Tijani, , Energy, 138, pp.873~882 (2017)
- B. Wang, , J. Environ. Sci, 26, pp.1062~1070 (2014)
- L. F. de Diego, , Ind. Eng. Chem. Res, 53, pp.87~103 (2014)
- S. Sajen, , Energy Fuels, 30, pp.7596~7603 (2016)
- J. H. Hwang, , Fuel, 231, pp.290~296 (2018)
- I. Adánez-Rubio, , Appl. Energy, 208, pp.561~570 (2017)
- Y. M. Choi, , Chem. Phys. Chem, 7, pp.1957~1963 (2006)
- C. Sun, , Energy Environ. Sci, 5, pp.8475~8505 (2012)
- R. P. Kusy, , J. Appl. Phys, 48, pp.5301~5305 (1977)