Increased Selectivity in CO 2 /CH 4  Separation with Mixed‐Matrix Membranes of Polysulfone and Mixed‐MOFs MIL‐101(Cr) and ZIF‐8 | Zendy

Tanh Jeazet Harold B. | Zendy; Sorribas Sara | Zendy; RománMarín José M. | Zendy; Zornoza Beatriz | Zendy; Téllez Carlos | Zendy; Coronas Joaquín | Zendy; Janiak Christoph | Zendy

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Increased Selectivity in CO 2 /CH 4 Separation with Mixed‐Matrix Membranes of Polysulfone and Mixed‐MOFs MIL‐101(Cr) and ZIF‐8

Author(s) -

Tanh Jeazet Harold B.,

Sorribas Sara,

RománMarín José M.,

Zornoza Beatriz,

Téllez Carlos,

Coronas Joaquín,

Janiak Christoph

Publication year - 2016

Publication title -

european journal of inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 1434-1948

DOI - 10.1002/ejic.201600190

Subject(s) - polysulfone , chemistry , selectivity , membrane , metal organic framework , permeation , gas separation , chemical engineering , nuclear chemistry , analytical chemistry (journal) , chromatography , organic chemistry , adsorption , catalysis , biochemistry , engineering

Combination of two hydrothermally stable MOFs MIL‐101(Cr) and ZIF‐8 in a 1:1 ratio in a polysulfone (PSF) mixed‐matrix membrane (MMM) showed a significant higher selectivity in mixed‐gas CO 2 /CH 4 permeation tests for 16 wt.‐% MIL‐101(Cr)/ZIF‐8 compared to analogous single‐filler MMMs [MIL‐101(Cr) or ZIF‐8] or to the also tested combination NH 2 ‐MIL‐53(Al)/ZIF‐8 (1:1 ratio). The CO 2 /CH 4 selectivity increased significantly from 23 to 40 from pure PSF to the 16 wt.‐% MIL‐101(Cr)/ZIF‐8 membrane. Separation of CO 2 /CH 4 is relevant for purification (“sweetening”) of natural gas (CH 4 as main component) which is soured with up to over 40 % CO 2 and N 2 and only useable at low CO 2 concentrations.

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