Journal
ENERGY & FUELS
Volume 35, Issue 21, Pages 17212-17224Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.1c01682
Keywords
-
Categories
Funding
- Spanish Ministry of Science and Innovation (MICINN, Madrid, Spain) [ENE2013-44350R]
- MICINN-FEDER [ENE2017-82451-C3]
- MICINN [BES-2014-069010]
- MICINN Juan de la Cierva Formacion Fellowship [FJC2018-037162-I]
Ask authors/readers for more resources
The study found that Ce is a better catalyst promoter than Mg, achieving higher CO2 conversion rates and CH4 selectivity over a wider temperature range. The Ni-Mg-Ce/CDC catalyst reached the highest methane yield of 80% in the temperature range of 350-400 degrees C. Ce-promoted catalysts also exhibited high activity at low temperatures.
The CO2 methanation performance of Mg- and/or Ce-promoted Ni catalysts supported on cellulose-derived carbon (CDC) was investigated. The samples, prepared by biomorphic mineralization techniques, exhibit pore distributions correlated to the particle sizes, revealing a direct effect of the metal content in the textural properties of the samples. The catalytic performance, evaluated as CO2 conversion and CH4 selectivity, reveals that Ce is a better promoter than Mg, reaching higher conversion values in all of the studied temperature range (150-500 degrees C). In the interval of 350-400 degrees C, Ni-Mg-Ce/CDC attains the maximum yield to methane, 80%, reaching near 100% CH4 selectivity. Ce-promoted catalysts were highly active at low temperatures (175 degrees C), achieving 54% CO2 conversion with near 100% CH4 selectivity. Furthermore, the large potential stability of the Ni-Mg-Ce/CDC catalyst during consecutive cycles of reaction opens a promising route for the optimization of the Sabatier process using this type of catalyst.
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