We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Chemical looping oxidation of CH<sub>4</sub> with 99.5% CO selectivity over V<sub>2</sub>O<sub>3</sub>‐based redox materials using CO<sub>2</sub> for regeneration.
- Authors
Ge, Yuanzheng; He, Tao; Wang, Zhiqi; Han, Dezhi; Li, Jianqing; Wu, Jingli; Wu, Jinhu
- Abstract
The main challenge of chemical looping dry reforming of methane (CLDRM) is the development of a high‐performance redox material. In this study, V2O3 was proved to be a unique redox material possessing high oxygen storage capacity (421.6 mg/g‐V2O3, CH4 consumption base) and strong carbon‐deposition suppressing capability. It can be reduced to carbide by CH4, and the carbide can be reoxidized to V2O3 with CO2. Based on this redox cycle, CH4 conversion with 99.5% CO selectivity coupled with efficient CO2 splitting to CO was realized successively. However, the CH4 conversion over pristine V2O3 is low (<50%) and not stable, therefore catalytic activation of C‐H bonds combined with structural modification of V2O3 was carried out to accelerate the stoichiometric reactions and improve the redox stability. Finally, a maximum CH4 conversion of 81.7% with stable performance during cycles was reached, and further investigation confirmed the series reaction mechanism and identified the rate‐controlling step.
- Subjects
OXIDATION; PARTIAL oxidation; OXIDATION-reduction reaction; OXYGEN carriers
- Publication
AIChE Journal, 2020, Vol 66, Issue 1, pN.PAG
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.16772