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

verfasst von

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.

Organisationseinheit(en)

AG Katalyse und Membranen
Institut für Physikalische Chemie und Elektrochemie

Externe Organisation(en)

Universidad de Zaragoza

Typ

Artikel

Journal

ChemNanoMat

Band

4

Seiten

698-703

Anzahl der Seiten

6

ISSN

2199-692X

Publikationsdatum

04.07.2018

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Biomaterialien, Erneuerbare Energien, Nachhaltigkeit und Umwelt, Energieanlagenbau und Kraftwerkstechnik, Werkstoffchemie

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1002/cnma.201800126 (Zugang: Geschlossen)