Designing Metal-Organic Framework (MOF) Membranes for Isomer Separation

Shenzhen Cong; Yunqi Zhou; Chenglian Luo; Caixia Wang; Jixiao Wang; Zhi Wang; Xinlei Liu

doi:10.1002/anie.202319894

Designing Metal-Organic Framework (MOF) Membranes for Isomer Separation

Angew Chem Int Ed Engl. 2024 Apr 8;63(15):e202319894. doi: 10.1002/anie.202319894. Epub 2024 Feb 19.

Authors

Shenzhen Cong^{1

2}, Yunqi Zhou^{1

2}, Chenglian Luo^{1

2}, Caixia Wang^{1

2}, Jixiao Wang^{1

2}, Zhi Wang^{1

2}, Xinlei Liu^{1

2}

Affiliations

¹ Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
² Tianjin Key Laboratory of Membrane Science and Desalination Technology, Haihe Laboratory of Sustainable Chemical Transformations, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 300072, China.

PMID: 38265268
DOI: 10.1002/anie.202319894

Abstract

Membrane-based separation has the merit of low carbon footprint. In this study, the pore size of metal-organic framework (MOF) membranes is rationally designed for discriminating various pairs of hydrocarbon isomers. Specifically, Zr-MOF UiO-66 (UiO stands for University of Oslo) membranes are developed for separating p/o-xylene due to their proper pore size. For n-hexane/2-methylpentane separation, the functional groups and proportion of the ligands in UiO-66 are gradually adjusted to effectively regulate the pore size, and UiO-66-33Br membranes are constructed. In addition, relying on the utilization of ligands with shorter length, MOF-801 membranes with smaller pore size are fabricated for n/i-butane separation.

Keywords: MOF membranes; UiO-66; hydrocarbon; isomer separation.

Abstract

Grants and funding