High capacity laminate adsorbers: Enhancing separation performance beyond packed beds

Born, Mathijs H.B.; Denayer, Joeri F.M.; Van Assche, Tom R.C.

doi:10.1016/j.cej.2024.150627

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.150627

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High capacity laminate adsorbers: Enhancing separation performance beyond packed beds

Mathijs H.B. Born,

Joeri F.M. Denayer,

Tom R.C. Van Assche

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Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO₂ Capture

Gebremariam,

Varghese,

Ehrling

et al. 2024

ACS Appl. Mater. Interfaces

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Metal−organic frameworks (MOFs) have emerged as promising candidates for CO 2 adsorption due to their ultrahighspecific surface area and highly tunable pore-surface properties. However, their large-scale application is hindered by processing issues associated with their microcrystalline powder nature, such as dustiness, pressure drop, and poor mass transfer within packed beds. To address these challenges, shaping/structuring micronsized polycrystalline MOF powders into millimeter-sized structured forms while preserving porosity and functionality represents an effective yet challenging approach. In this study, a facile and versatile strategy was employed to integrate moisture-stable and scalable microcrystalline MOFs (UiO-66 and ZIF-8) into a poly(acrylonitrile) matrix to fabricate readily processable, millimeter-sized hierarchically porous structured adsorbents with ultrahigh MOF loadings (∼90 wt %) for direct industrial carbon capture applications. These structured composite beads retained the physicochemical properties and separation performance of the pristine MOF crystal particles. Structured UiO-66 and ZIF-8 exhibited high specific surface areas of 1130 m 2 g −1 and 1431 m 2 g −1 , respectively. The structured UiO-66 achieved a CO 2 adsorption capacity of 2.0 mmol g −1 at 1 bar and a dynamic CO 2 /N 2 selectivity of 17 for a CO 2 /N 2 gas mixture with a 15/85 volume ratio at 25 °C. Furthermore, the structured adsorbents exhibited excellent cyclability in static and dynamic CO 2 adsorption studies, making them promising candidates for practical application.

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Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO₂ Capture

Gebremariam,

Varghese,

Ehrling

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

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High capacity laminate adsorbers: Enhancing separation performance beyond packed beds

Cited by 1 publication

References 52 publications

Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO₂ Capture

Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO₂ Capture

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High capacity laminate adsorbers: Enhancing separation performance beyond packed beds

Cited by 1 publication

References 52 publications

Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO2 Capture

Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO2 Capture

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Product

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About

Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO₂ Capture

Hierarchically Porous Structured Adsorbents with Ultrahigh Metal–Organic Framework Loading for CO₂ Capture