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Article Dans Une Revue ChemPhysChem Année : 2024

Establishing ZIF‐8 as a reference material for hydrogen cryoadsorption: An interlaboratory study

Rafael Balderas‐xicohténcatl
Ali N Al Shakhs
  • Fonction : Auteur
Ángel Berenguer‐murcia
Craig E Buckley
  • Fonction : Auteur
Diego Cazorla‐amorós
Georgia Charalambopoulou
David Fairen‐jimenez
Karen N Heinselman
Terry D Humphries
Stefan Kaskel
Hyunlim Kim
  • Fonction : Auteur
Juan P Marco‐lozar
  • Fonction : Auteur
Hyunchul Oh
Philip A Parilla
Mark Paskevicius
Irena Senkovska
Sarah Shulda
Joaquin Silvestre‐albero
Theodore Steriotis
Christos Tampaxis
Michael Hirscher
Michael Maiwald

Résumé

Hydrogen storage by cryoadsorption on porous materials has the advantages of low material cost, safety, fast kinetics, and high cyclic stability. The further development of this technology requires reliable data on the H 2 uptake of the adsorbents, however, even for activated carbons the values between different laboratories show sometimes large discrepancies. So far no reference material for hydrogen cryoadsorption is available. The metal‐organic framework ZIF‐8 is an ideal material possessing high thermal, chemical, and mechanical stability that reduces degradation during handling and activation. Here, we distributed ZIF‐8 pellets synthesized by extrusion to 9 laboratories equipped with 15 different experimental setups including gravimetric and volumetric analyzers. The gravimetric H 2 uptake of the pellets was measured at 77 K and up to 100 bar showing a high reproducibility between the different laboratories, with a small relative standard deviation of 3–4 % between pressures of 10–100 bar. The effect of operating variables like the amount of sample or analysis temperature was evaluated, remarking the calibration of devices and other correction procedures as the most significant deviation sources. Overall, the reproducible hydrogen cryoadsorption measurements indicate the robustness of the ZIF‐8 pellets, which we want to propose as a reference material.

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Matériaux
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Origine : Publication financée par une institution
Licence : CC BY - Paternité

Dates et versions

hal-04469289 , version 1 (20-02-2024)

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Jose A Villajos, Rafael Balderas‐xicohténcatl, Ali N Al Shakhs, Ángel Berenguer‐murcia, Craig E Buckley, et al.. Establishing ZIF‐8 as a reference material for hydrogen cryoadsorption: An interlaboratory study. ChemPhysChem, In press, ⟨10.1002/cphc.202300794⟩. ⟨hal-04469289⟩
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