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Aluminophosphate monoliths with high CO2-over-N2 selectivity and CO2 capture capacity
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4888-6237
Department of Materials and Environmental Chemistry, Stockholm University.
Department of Materials and Environmental Chemistry, Stockholm University.
Department of Materials and Environmental Chemistry, Stockholm University.
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2014 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 4, no 99, p. 55877-55883Article in journal (Refereed) Published
Abstract [en]

Monoliths of microporous aluminophosphates (AlPO4-17 and AlPO4-53) were structured by binder-free pulsed current processing. Such monoliths could be important for carbon capture from flue gas. The AlPO4-17 and AlPO4-53 monoliths exhibited a tensile strength of 1.0 MPa and a CO2 adsorption capacity of 2.5 mmol g-1 and 1.6 mmol g-1, respectively at 101 kPa and 0°C. Analyses of single component CO2 and N2 adsorption data indicated that the AlPO4-53 monoliths had an extraordinarily high CO2-over-N2 selectivity from a binary gas mixture of 15 mol% CO2 and 85 mol% N2. The estimated CO2 capture capacity of AlPO4-17 and AlPO4-53 monoliths in a typical pressure swing adsorption (PSA) process at 20°C was higher than that of the commonly used zeolite 13X granules. Under cyclic sorption conditions, AlPO4-17 and AlPO4-53 monoliths were regenerated by lowering the pressure of CO2. Regeneration was done without application of heat, which would regenerate them to their full capacity for CO2 adsorption.

Place, publisher, year, edition, pages
2014. Vol. 4, no 99, p. 55877-55883
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-11014DOI: 10.1039/c4ra05009fISI: 000344997800024Scopus ID: 2-s2.0-84908680775Local ID: 9e806485-9898-4b65-9441-788f572326bfOAI: oai:DiVA.org:ltu-11014DiVA, id: diva2:983963
Note
Validerad; 2014; 20141119 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Akhtar, Farid

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