Copper and palladium loaded polyol dendrimer–montmorillonite composites as potential adsorbents for CO2 and H2

Intercalation of Na + -montmorillonite (NaMt) by dendrimer H20 and incorporation of palladium (Pd) and copper (Cu) nanoparticles (PdNP and CuNP) resulted in NaMt-H20-Cu and NaMt-H20-Pd materials with affinity towards carbon dioxide (CO 2 ) and hydrogen (H 2 ). Metal incorporation produced a slight s...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2019-05, Vol.30 (9), p.8182-8190
Main Authors: Bouazizi, N., Ouargli, R., Nousir, S., Azzouz, A.
Format: Article
Language:English
Subjects:
Affinity
Ambient temperature
Carbon dioxide
Carbon sequestration
Carrier gases
Characterization and Evaluation of Materials
Chemistry and Materials Science
Convection heating
Copper
Forced convection
Gas streams
Hydrogen
Materials Science
Montmorillonite
Nanoparticles
Optical and Electronic Materials
Oxygen atoms
Palladium
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Summary:Intercalation of Na + -montmorillonite (NaMt) by dendrimer H20 and incorporation of palladium (Pd) and copper (Cu) nanoparticles (PdNP and CuNP) resulted in NaMt-H20-Cu and NaMt-H20-Pd materials with affinity towards carbon dioxide (CO 2 ) and hydrogen (H 2 ). Metal incorporation produced a slight structure compaction due to PdNP and CuNP interactions with clay lattice and dendrimer oxygen atoms. Measurements through CO 2 temperature programmed desorption revealed higher CO 2 retention capacity for NaMt-H20-Pd but higher hydrogen uptake for NaMt-H20-Cu. The affinity towards hydrogen decreased in the following sequence: NaMt-H20-Cu > NaMt-H20-Pd > NaMt-H20 > NaMt, confirming the significant role of the incorporated metals. Hydrogen was found to adsorb almost instantly at ambient temperature and pressure, with easy consecutive release upon slight heating up to 80 °C or under forced convection upon strong carrier gas stream. These results demonstrate the occurrence of preponderantly physical hydrogen adsorption, opening promising prospects for the reversible capture of CO 2 and hydrogen.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-019-01133-2