Polymer-Stabilized Percolation Membranes Based on Nanosized Zeolitic Imidazolate Frameworks for H₂/CO₂ Separation

authored by

Javier Sánchez-Laínez, Sebastian Friebe, Beatriz Zornoza, Alexander Mundstock, Ina Strauß, Carlos Téllez, Jürgen Caro, Joaquín Coronas

Abstract

This work shows the preparation of self-supported composite membranes prepared with the nano-sized zeolitic imidazolate frameworks (ZIFs): ZIF-8, ZIF-7(III) and ZIF-7/8 core-shells. The membranes consist of compressed pellets of ZIF nanoparticles (up to 74 wt% loading) stabilized with gas-impermeable epoxy resin, providing a gas transport-selective percolation network named polymer-stabilized percolation membrane (PSPM). The different PSPMs have been characterized by SEM, TGA, XRD, FTIR and Raman. FIB/SEM has provided a 3D reconstruction of the composite thanks to the slice and view technique, allowing a perfect visualization of the inside of the network. The N₂ adsorption properties have also been studied and compared with those of ZIFs in powder state. The gas separation performance of these membranes has been tested for the H₂/CO₂ mixture. The PSPMs were tested with feed pressures up to 5 bar, obtaining H₂ permeabilities of hundreds of Barrer and a maximum H₂/CO₂ selectivity of 12.3.

Organisation(s)

Section Catalysis and Membranes
Institute of Physical Chemistry and Electrochemistry

External Organisation(s)

Universidad de Zaragoza

Type

Article

Journal

ChemNanoMat

Volume

4

Pages

698-703

No. of pages

6

ISSN

2199-692X

Publication date

04.07.2018

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Biomaterials, Renewable Energy, Sustainability and the Environment, Energy Engineering and Power Technology, Materials Chemistry

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1002/cnma.201800126 (Access: Closed)