Effects of ZnO Addition on Fe2O3/Al2O3 Oxygen Carriers on CH4 Reduction for Chemical Looping Combustion

Sujinda Thongsermsuk; Benjapon Chalermsinsuwan; Prapan Kuchonthara; Pornpote Piumsomboon

doi:10.4028/www.scientific.net/MSF.872.196

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HomeMaterials Science ForumMaterials Science Forum Vol. 872Effects of ZnO Addition on Fe2O3/Al2O3 Oxygen...

Effects of ZnO Addition on Fe₂O₃/Al₂O₃ Oxygen Carriers on CH₄ Reduction for Chemical Looping Combustion

Abstract:

Fe₂O₃/Al₂O₃/ZnO oxygen carriers with small content ZnO (5 wt% to 10 wt%) were prepared by physical mixing method and were evaluated its capability as an oxygen carrier in a chemical looping combustion. The combustion was conducted by using CH₄ as a fuel gas. The reduction process of Fe₂O₃/Al₂O₃/ZnO oxygen carrier was carried out in a fixed bed reactor. The solid reduction products were characterized by X-ray diffraction (XRD) and Scanning Electron Microscope with EDS Attachment (SEM-EDS). The results show that the reactivity of Fe₂O₃/Al₂O₃/ZnO oxygen carriers is greater than that of Fe₂O₃/Al₂O₃ which is implied the synergetic effect between ZnO and Fe₂O₃. XRD results show that the iron oxide in the oxygen carriers is reduced to metallic iron. SEM-EDS also shows that the iron agglomeration is prevented. Consequently, the suitable content of ZnO in oxygen carriers is ranged from 5 wt% to 10 wt%.

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Materials Science Forum (Volume 872)

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196-200

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.872.196

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September 2016

Authors:

Sujinda Thongsermsuk, Benjapon Chalermsinsuwan, Prapan Kuchonthara, Pornpote Piumsomboon*

Keywords:

Chemical Looping Combustion, Fe₂O₃/Al₂O₃/ZnO Oxygen Carrier, Reduction

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