Fully inverse adsorption enables one-step high-purity C₂H₂ separation from ternary C2 mixtures in a robust porous crystal.

ABSTRACT: Direct harvesting of electronic-grade acetylene (C₂H₂) from ternary C2 mixtures is a great challenge due to the ubiquitous adsorption preference of conventional porous materials (C₂H₂ > ethylene (C₂H₄) > ethane (C₂H₆)). Here, we report a strategy to reverse this selectivity by leveraging ligand functionalization in porous crystals. Through the incorporation of trifluoromethyl/methyl groups into a pyrazole-carboxylate linker, we engineer a series of MOF-5 analogs. The optimal material, NTU-98, fully reverses the adsorption trend of C2 hydrocarbons (C₂H₆ > C₂H₄ > C₂H₂), enabling direct production of C₂H₂ with >99.99% p

SUBMITTER: Zhang M 

PROVIDER: S-EPMC12627629 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature