Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 18, Issue 9, Pages 6378-6384Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2018.15663
Keywords
Chemical Looping Combustion; Oxygen Carrier; Spinel; Redox
Categories
Funding
- Energy Efficiency and Resources Programs of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry and Energy, Republic of Korea [20152010201840]
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The purpose of this study was to use a spinel structure to improve the performance and stability of chemical looping combustion processes. The oxygen carrier employed was Fe2MnO4, in which Ni was substituted at the Fe sites. Fe2-xNixMnO4 spinel particles were successfully synthesized by a sol-gel method. The obtained particles were characterized by X-ray diffraction (XRD), scanning electron microscopy, and CH4-/CO-temperature programmed desorption experiments. The XRD analysis confirmed that all the synthesized particles presented spinel structure. The performance of the particles was evaluated in redox cycle experiments under H-2/air and CH4/air at 850 degrees C using a thermogravimetric analyzer. The Ni-substituted particles exhibited a higher performance than Fe2Mn1, being Fe1Ni1Mn1 the sample with the highest oxygen transfer capacity (19.68 wt% in H-2/air and 15.90 wt% in CH4/air).
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