Journal
ENERGIES
Volume 14, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/en14061663
Keywords
gasification; adsorption; biomass; oxygen carrier; DFT
Categories
Funding
- National Natural Science Foundation of China [51776071, 51776070]
- Fundamental Research Funds for the Central Universities [2018ZD08, 2018MS034, 2016YQ07]
- National Key R&D Program of China [2016YFB0600205-04]
- project of National Bio Energy Group Co., Ltd. [5278991900MF]
Ask authors/readers for more resources
In this study, biomass chemical looping gasification with Fe2O3 as the oxygen carrier was used for the production of hydrogen, with ethanol as the probe reaction to reveal the decomposition mechanism. The results showed that the degree of reduction of the Fe2O3(001) surface had a significant effect on the catalytic decomposition of ethanol into synthesis gas, indicating the importance of understanding the CLG reaction mechanism on perfect and reduced OC surfaces.
Biomass chemical looping gasification (CLG) is a novel gasification technology for hydrogen production, where the oxygen carrier (OC) transfers lattice oxygen to catalytically oxidize fuel into syngas. However, the OC is gradually reduced, showing different reaction activities in the CLG process. Fully understanding the CLG reaction mechanism of fuel molecules on perfect and reduced OC surfaces is necessary, for which the CLG of ethanol using Fe2O3 as the OC was introduced as the probe reaction to perform density functional theory calculations to reveal the decomposition mechanism of ethanol into the synthesis gas (including H-2, CH4, ethylene, formaldehyde, acetaldehyde, and CO) on perfect and reduced Fe2O3(001) surfaces. When Fe2O3(001) is reduced to FeO0.375(001), the calculated barrier energy decreases and then increases again, suggesting that the reduction state around FeO(001) favors the catalytic decomposition of ethanol to produce hydrogen, which proves that the degree of reduction has an important effect on the CLG reaction.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available