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H-2 adsorption on Cu(I)-ZSM-5: Exploration of Cu(I)-exchange in solution
Date
2019-07-12
Author
Altıparmak, İsmihan
Karakaya, Büşra
Üner, Deniz
İpek Torun, Bahar
Metadata
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A new Cu(I)-exchange method for zeolites in liquid media (acetonitrile) was developed with Cu/Al ratios surpassing 0.5 with ZSM-5 crystals containing pure Cu(I) cations without impurities such as Cl ions. The method resulted in a higher Cu/Al ratio (0.78) for mesoporous [B]-ZSM-5 when compared to microporous [Al]-ZSM-5 and [B]-ZSM-5 (0.55 and 0.66 respectively). H-2 storage capacities of these Cu(I)-exchanged zeolites were investigated at 323 K along with their differential heat of H-2 adsorption using adsorption calorimetry. H-2 storage capacities as high as 0.03 wt. % at 323 K and 40 kPa were achieved on [Al] and [B]-ZSM-5 and mesoporous [B]-ZSM-5 showed an outstanding H-2/Cu ratio of 1.03 at 323 K and below 100 kPa. Coverage-dependent differential adsorption heats were found to be ranging from 95 kJ/mol to 5 kJ/mol with observed values of 30-10 kJ/mol for H-2/Cu ratios between 0.05 and 0.15. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Subject Keywords
Fuel Technology
,
Renewable Energy, Sustainability and the Environment
,
Energy Engineering and Power Technology
,
Condensed Matter Physics
URI
https://hdl.handle.net/11511/43011
Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
DOI
https://doi.org/10.1016/j.ijhydene.2018.10.111
Collections
Department of Chemical Engineering, Article
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BibTeX
İ. Altıparmak, B. Karakaya, D. Üner, and B. İpek Torun, “H-2 adsorption on Cu(I)-ZSM-5: Exploration of Cu(I)-exchange in solution,”
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
, vol. 44, pp. 18866–18874, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43011.