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Article Dans Une Revue Science Année : 2022

Rational design of mixed-matrix metal-organic framework membranes for molecular separations

Shuvo Jit Datta
Alvaro Mayoral
Narasimha Murthy Srivatsa Bettahalli
Prashant Bhatt
Madhavan Karunakaran
  • Fonction : Auteur
Ionela Daniela Carja
  • Fonction : Auteur
Dong Fan
Paulo Graziane M. Mileo
Mohamed Eddaoudi

Résumé

Conventional separation technologies to separate valuable commodities are energy intensive, consuming 15% of the worldwide energy. Mixed-matrix membranes, combining processable polymers and selective adsorbents, offer the potential to deploy adsorbent distinct separation properties into processable matrix. We report the rational design and construction of a highly efficient, mixed-matrix metal-organic framework membrane based on three interlocked criteria: (i) a fluorinated metal-organic framework, AlFFIVE-1-Ni, as a molecular sieve adsorbent that selectively enhances hydrogen sulfide and carbon dioxide diffusion while excluding methane; (ii) tailoring crystal morphology into nanosheets with maximally exposed (001) facets; and (iii) in-plane alignment of (001) nanosheets in polymer matrix and attainment of [001]-oriented membrane. The membrane demonstrated exceptionally high hydrogen sulfide and carbon dioxide separation from natural gas under practical working conditions. This approach offers great potential to translate other key adsorbents into processable matrix.

Domaines

Chimie

Dates et versions

hal-03753036 , version 1 (17-08-2022)

Identifiants

Citer

Shuvo Jit Datta, Alvaro Mayoral, Narasimha Murthy Srivatsa Bettahalli, Prashant Bhatt, Madhavan Karunakaran, et al.. Rational design of mixed-matrix metal-organic framework membranes for molecular separations. Science, 2022, 376 (6597), pp.1080-1087. ⟨10.1126/science.abe0192⟩. ⟨hal-03753036⟩
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