Fine-tuning the pore environment of ultramicroporous three-dimensional covalent organic frameworks for efficient one-step ethylene purification.

ABSTRACT: The construction of functional three-dimensional covalent organic frameworks (3D COFs) for gas separation, specifically for the efficient removal of ethane (C₂H₆) from ethylene (C₂H₄), is significant but challenging due to their similar physicochemical properties. In this study, we demonstrate fine-tuning the pore environment of ultramicroporous 3D COFs to achieve efficient one-step C₂H₄ purification. By choosing our previously reported 3D-TPB-COF-H as a reference material, we rationally design and synthesize an isostructural 3D COF (3D-TPP-COF) containing pyridine units. Impressively, compared with 3D-TPB-COF-H, 3D-TPP-COF exhibits both high C₂H₆ adsorption capacity (110.4 cm³ g^-1

SUBMITTER: Xie Y 

PROVIDER: S-EPMC11001888 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature