The influence of surface textural properties and adsorption temperature on H2 adsorption and storage performance of MIL-88B(Fe) MOFs

Tawanda Matamba, Samira Sadeghi, Hussein Rasool Abid, Masoumeh Zargar, Alireza Keshavarz and Stefan Iglauer

Renewable Energy, 2025, vol. 248, issue C

Abstract: To advance the establishment of a stable H2 economy we need to solve the issue regarding its storage. The physicochemical properties of Metal Organic Frameworks (MOFs) make them suitable for H2 storage. Therefore, here, we synthesized two Iron-based MOFs (12-MIL-88 B(Fe), 24-MIL-88 B(Fe) at different reaction times (12 h and 24 h), to investigate the relationship between adsorption temperature and pressure with the material's surface textural properties towards H2 storage (at 30 °C, 0 °C, −78.5 °C, and −196.15 °C and from vacuum pressure to 55 bar). Results showed that at 30 °C and 0 °C adsorption temperature, H2 adsorption capacity of 24-MIL-88 B(Fe) was higher than 12-MIL-88 B(Fe) suggesting that at this condition the adsorption performance of the material is dependent on pore volume, surface area, and adsorption pressure. Adsorption tests conducted at −78.5 °C and cryogenic temperature (−196.15 °C) the adsorption capacity of 12-MIL-88 B(Fe) was constantly higher than 24-MIL-88 B(Fe) suggesting that at very low temperatures the pore size of material influence its adsorption performance. Notably, at all the temperatures studied, adsorption pressure continued to positively promote the amount of H2 adsorption. Results from this study can help in selecting the best material for H2 storage under different temperature conditions.

Keywords: H2 adsorption and storage; MOFs; MIL-88B(Fe); Pore distribution; Pore volume; Pore size (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:248:y:2025:i:c:s096014812500847x

DOI: 10.1016/j.renene.2025.123185

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