Experimental and Theoretical Study of the Interactions between Fe 2 O 3 /Al 2 O 3 and CO

Zhiyong Liang, Wu Qin and Changqing Dong
Additional contact information
Zhiyong Liang: National Engineering Laboratory for Biomass Power Generation Equipment, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Wu Qin: National Engineering Laboratory for Biomass Power Generation Equipment, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Changqing Dong: National Engineering Laboratory for Biomass Power Generation Equipment, School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Energies, 2017, vol. 10, issue 5, 1-15

Abstract: The behavior of Fe 2 O 3 /Al 2 O 3 particles as oxygen carriers (OCs) for CO chemical looping combustion (CLC) under different reaction temperatures (700 °C, 800 °C, 900 °C, and 1000 °C) were tested in a lab-scale fluidized bed and a thermogravimetric analysis (TGA) unit. The results show that the oxygen carrier presents the highest reactivity at 800 °C, even after 30 cycles of redox reaction in a fluidized bed, while more obvious carbon deposition occurred for the case at 700 °C, and agglomeration for the case at 1000 °C. Moreover, the detailed behavior of the prepared Fe 2 O 3 /Al 2 O 3 particle was detected in the TGA apparatus at different reaction temperatures. Furthermore, temperature-programming TGA experiments were performed to investigate the influence of different CO concentrations and CO/CO 2 concentrations on the reaction between CO and OC during the chemical looping combustion processes. Based on these experimental behaviors of the prepared Fe 2 O 3 /Al 2 O 3 during the CLC of CO, the detailed models and electronic properties of the pure and reduced Fe 2 O 3 /Al 2 O 3 supported the slabs, CO adsorption, and oxidation, and the decomposition reactions on these surfaces were revealed using density functional theory (DFT) calculations which went deep into the nature of the synergetic effect of the support of Al 2 O 3 on the activity of Fe 2 O 3 for the CLC of CO.

Keywords: density functional theory (DFT); CO 2 capture; chemical looping combustion (CLC); iron oxide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/10/5/598/pdf (application/pdf)
https://www.mdpi.com/1996-1073/10/5/598/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:5:p:598-:d:97218

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().