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High‐Flux High‐Selectivity Metal–Organic Framework MIL‐160 Membrane for Xylene Isomer Separation by Pervaporation
Author(s) -
Wu Xiaocao,
Wei Wan,
Jiang Jianwen,
Caro Jürgen,
Huang Aisheng
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201807935
Subject(s) - pervaporation , selectivity , xylene , p xylene , membrane , o xylene , chemistry , thermal stability , petrochemical , chemical engineering , m xylene , materials science , organic chemistry , permeation , catalysis , benzene , biochemistry , engineering
Separation of p ‐xylene (kinetic diameter ca. 0.58 nm) from its bulkier isomers ( o ‐xylene and m ‐xylene, ca. 0.68 nm) is challenging, but important in the petrochemical industry. Herein, we developed a highly selective and stable metal–organic framework (MOF) MIL‐160 membrane for selective separation of p ‐xylene from its isomers by pervaporation. The suitable pore size (0.5∼0.6 nm) of the MIL‐160 membrane selectively allows p ‐xylene to pass through, while excluding the bulkier o ‐xylene and m ‐xylene. For the separation of equimolar binary p ‐/ o ‐xylene mixtures at 75 °C, high p ‐xylene flux of 467 g m −2 h −1 and p ‐/ o ‐xylene selectivity of 38.5 could be achieved. The stability of MIL‐160, ensured the separation performance of the MIL‐160 membrane was unchanged over a 24 h measurement. The high separation performance combined with its high thermal and chemical stability makes the MIL‐160 membrane a promising candidate for the separation of xylene isomers.