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Selective methanation of carbonate@carbon composite formed by the reaction of carbon dioxide with alkali metals.
- Source :
-
International Journal of Energy Research . Feb2021, Vol. 45 Issue 2, p3385-3396. 12p. - Publication Year :
- 2021
-
Abstract
- Summary: We systematically studied the thermochemical behaviors of alkali metals under the carbon dioxide (CO2) atmosphere and first investigated the hydromethanation performance of the alkali metal carbonate@carbon product formed in the reaction of CO2 with alkali metals. The on‐set reaction temperature of alkali metals with CO2 is at about 466, 584, and 595°C, respectively, following Li < Na < K. The experimental results indicate that COx‐free methane can be selectively and efficiently generated by hydrogenation of these carbonate@carbon composites at 450°C without a catalyst. Among these carbonate@carbon composites, the Li2CO3@carbon composite shows superior methanation performance. The selectivity of methanation is near 100%. The yield and content of methane are able to reach 30.3% and 26.6 mol%, respectively. This work provides an alternative method to produce methane, utilizing CO2 resources. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ALKALI metals
*METHANATION
*CARBON dioxide
*METAL products
*HYDROGENATION
Subjects
Details
- Language :
- English
- ISSN :
- 0363907X
- Volume :
- 45
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- International Journal of Energy Research
- Publication Type :
- Academic Journal
- Accession number :
- 148280955
- Full Text :
- https://doi.org/10.1002/er.5977