[Cu<sub>2</sub>(trz-ia)<sub>2</sub>]─An Ultramicroporous Cu<sub>2</sub> Paddle Wheel Triazolyl Isophthalate MOF: A Comparative Study of Its Properties in Dihydrogen Adsorption and Isotopologue Separation

A Cu<sub>2</sub> paddle wheel-based metal-organic framework, [Cu<sub>2</sub>(trz-ia)<sub>2</sub>] (trz-ia<sup>2-</sup> = 5-(4<i>H</i>-1,2,4-triazol-4-yl) isophthalate), is investigated for hydrogen adsorption and hydrogen isotopologue separation. Its ultramicroporous structure with pore diameters ranging from 0.35 to 0.53 nm allows for strong interactions with dihydrogen molecules, resulting in steep H<sub>2</sub> uptake and heat of adsorption <i>Q</i><sub>ads</sub> = 9.7 kJ mol<sup>-1</sup>. Notably, the hydrogen density inside the pores is 43.9 g L<sup>-1</sup> at 77 K and 100 kPa. Thermal desorption spectroscopy (TDS) after exposure to a H<sub>2</sub>/D<sub>2</sub> mixture indicates dihydrogen isotopologue separation with a selectivity of <i>S</i> = 6 at 30 K and a high uptake of D<sub>2</sub>. These findings are compared with numerous other metal-organic frameworks (MOFs) and related to their pore size.

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Publication Details

Journal
Inorganic Chemistry
Published
2025-03-05
DOI
https://doi.org/10.1021/acs.inorgchem.4c05225
Citations
6
Primary Topic
Metal-Organic Frameworks: Synthesis and Applications
Type
article
Field-Weighted Citation Impact
3.22

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article

[Cu2(trz-ia)2]─An Ultramicroporous Cu2 Paddle Wheel Triazolyl Isophthalate MOF: A Comparative Study of Its Properties in Dihydrogen Adsorption and Isotopologue Separation

Sibo Chetry, Stefan Kaskel, Andreas Pöppl, Harald Krautscheid et al.
6 citations
Inorganic Chemistry
Metal-Organic Frameworks: Synthesis and Applications
3.22
article

[Cu2(trz-ia)2]─An Ultramicroporous Cu2 Paddle Wheel Triazolyl Isophthalate MOF: A Comparative Study of Its Properties in Dihydrogen Adsorption and Isotopologue Separation

Sibo Chetry, Stefan Kaskel, Andreas Pöppl, Harald Krautscheid, Muhammad Fernadi Lukman, Volodymyr Bon, Michael Hirscher, P. K. Sarkar
article en
6 citations

Abstract

A Cu<sub>2</sub> paddle wheel-based metal-organic framework, [Cu<sub>2</sub>(trz-ia)<sub>2</sub>] (trz-ia<sup>2-</sup> = 5-(4<i>H</i>-1,2,4-triazol-4-yl) isophthalate), is investigated for hydrogen adsorption and hydrogen isotopologue separation. Its ultramicroporous structure with pore diameters ranging from 0.35 to 0.53 nm allows for strong interactions with dihydrogen molecules, resulting in steep H<sub>2</sub> uptake and heat of adsorption <i>Q</i><sub>ads</sub> = 9.7 kJ mol<sup>-1</sup>. Notably, the hydrogen density inside the pores is 43.9 g L<sup>-1</sup> at 77 K and 100 kPa. Thermal desorption spectroscopy (TDS) after exposure to a H<sub>2</sub>/D<sub>2</sub> mixture indicates dihydrogen isotopologue separation with a selectivity of <i>S</i> = 6 at 30 K and a high uptake of D<sub>2</sub>. These findings are compared with numerous other metal-organic frameworks (MOFs) and related to their pore size.

Inorganic ChemistryVol. 64(10)
Friedrich-Alexander-Universität Erlangen-Nürnberg (DE), Tohoku University (JP), Separation Systems (United States) (US), Max Planck Institute for Intelligent Systems (DE), Institute for Materials Research, Tohoku University, Technische Universität Dresden (DE), Leipzig University (DE)
Deutsche Forschungsgemeinschaft, Universität Leipzig
Openalex Percentile: Top 8%
Metal-Organic Frameworks: Synthesis and Applications
3.22
DOIOpen Access PDFOpenAlex
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