SO2 capture in a chemical stable Al(III) MOF: DUT-4 as an effective adsorbent to clean CH4

•SO2 gas adsorption performance of a Al(III) MOF known as DUT-4.•High SO2 adsorption cyclability.•High affinity for SO2 in the presence of CH4. Biomethane (CH4) combustion, as a renewable fuel, is an excellent alternative to decrease the CO2 emissions released into the atmosphere. However, this comb...

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Published in:Fuel (Guildford) 2022-08, Vol.322, p.124213, Article 124213
Main Authors: López-Olvera, Alfredo, Pioquinto-García, Sandra, Antonio Zárate, J., Diaz, Gabriela, Martínez-Ahumada, Eva, Obeso, Juan L., Martis, Vladimir, Williams, Daryl R., Lara-García, Hugo A., Leyva, Carolina, Soares, Carla Vieira, Maurin, Guillaume, Ibarra, Ilich A., Dávila-Guzmán, Nancy E.
Format: Article
Language:English
Subjects:
Adsorption
Biogas
Carbon dioxide
Carbon dioxide emissions
Catalysts
Chemical Sciences
Combustion
Contaminants
DUT-4
Emissions
Gas composition
Methane
Methane oxidation catalyst
MOFs
SO2 capture
Sulfur dioxide
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Summary:•SO2 gas adsorption performance of a Al(III) MOF known as DUT-4.•High SO2 adsorption cyclability.•High affinity for SO2 in the presence of CH4. Biomethane (CH4) combustion, as a renewable fuel, is an excellent alternative to decrease the CO2 emissions released into the atmosphere. However, this combustion requires catalysts which are normally poising by the presence of SO2 gas. Then, an auxiliary material capable of selective capturing the contaminant SO2 is necessary. In this work, the SO2 gas adsorption performance of a high stable Al(III) MOF known as DUT-4 was studied. In addition to the high SO2 uptake, in dry and wet conditions, and a high SO2 adsorption cyclability, we have explored for the first time a promising purification of CH4 in presence of SO2, taking into account the high affinity for SO2, even at a low concentration of SO2 (a molar gas composition of 1:99 SO2:CH4).
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2022.124213