Fabrication of Fe2O3/TiO2 Oxygen Carriers for Chemical Looping Combustion and Hydrogen Generation

Yu-Cheng Liu; Young Ku; Yao-Hsuan Tseng; Hao-Yeh Lee; Yu-Lin Kuo

doi:10.4209/aaqr.2015.10.0603

Fabrication of Fe2O3/TiO2 Oxygen Carriers for Chemical Looping Combustion and Hydrogen Generation

Yu-Cheng Liu¹, Young Ku ¹, Yao-Hsuan Tseng¹, Hao-Yeh Lee¹, Yu-Lin Kuo²

¹Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
²Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

Received: October 20, 2015
Revised: July 5, 2016
Accepted: July 11, 2016
Download Citation: ||https://doi.org/10.4209/aaqr.2015.10.0603

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Cite this article:
Liu, Y.C., Ku, Y., Tseng, Y.H., Lee, H.Y. and Kuo, Y.L. (2016). Fabrication of Fe2O3/TiO2 Oxygen Carriers for Chemical Looping Combustion and Hydrogen Generation. Aerosol Air Qual. Res. 16: 2023-2032. https://doi.org/10.4209/aaqr.2015.10.0603

HIGHLIGHTS

Prepared Fe₂O₃/TiO₂ oxygen carriers exhibited applicable reactivity and stability.
Effect of TiO₂ content on Fe₂O₃/TiO₂ oxygen carriers were studied.
High fuel conversion and H₂ production yield were achieved by fixed bed operation.

ABSTRACT

The characteristics and application of TiO₂-supported Fe₂O₃ oxygen carriers were investigated for chemical looping combustion (CLC) and hydrogen generation (CLHG) in this study. Prepared Fe₂O₃/TiO₂ oxygen carriers with 20–30 wt% of TiO₂ were demonstrated to achieve satisfactory results even after 30-cycle operation by thermogravimetric analyzer (TGA). Oxygen carriers contain more than 33 wt% TiO₂ were observed to be more porous and fragile after continuous high-temperature operation. Conversely, the reactivity of oxygen carriers contain less 10 wt% TiO₂ was rapidly decayed after operated for merely 3 redox cycles because of their dense structure. The CO₂ and H₂ conversions through syngas combustion and steam oxidation, respectively, for experiments were demonstrated to be feasible using sieved oxygen carriers at higher operation temperatures from 400 to 1000°C in fixed bed reactor (FBR) system.