Preprint Article Version 1 This version is not peer-reviewed

Study of the Effect of Inorganic Particles on the Gas Transport Properties of Glassy Polyimides for Selective CO2 and H2O Separation

Version 1 : Received: 6 November 2018 / Approved: 8 November 2018 / Online: 8 November 2018 (04:16:33 CET)

A peer-reviewed article of this Preprint also exists.

Escorihuela, S.; Valero, L.; Tena, A.; Shishatskiy, S.; Escolástico, S.; Brinkmann, T.; Serra, J.M. Study of the Effect of Inorganic Particles on the Gas Transport Properties of Glassy Polyimides for Selective CO2 and H2O Separation. Membranes 2018, 8, 128. Escorihuela, S.; Valero, L.; Tena, A.; Shishatskiy, S.; Escolástico, S.; Brinkmann, T.; Serra, J.M. Study of the Effect of Inorganic Particles on the Gas Transport Properties of Glassy Polyimides for Selective CO2 and H2O Separation. Membranes 2018, 8, 128.

Journal reference: Membranes 2018, 8, 128
DOI: 10.3390/membranes8040128

Abstract

Three polyimides and six inorganic fillers in a form of nanometer-sized particles were studied as thick film solution cast mixed matrix membranes (MMMs) for transport of CO2, CH4 and H2O. Gas transport properties and electron microscopy images indicate good polymer-filler compatibility for all membranes. The only filler type which demonstrated good distribution throughout the membrane thickness at 10 wt. % loading was BaCe0.2Zr0.7Y0.1O3 (BCZY). The influence of this filler on MMM gas transport properties was studied in detail for 6FDA-6FpDA in a filler content range from 1 to 20 wt.% and for Matrimid® and P84® at 10 wt. % loading. The most promising result was obtained for Matrimid® - 10wt% BCZY MMM, which showed improvement in CO2 and H2O permeabilities accompanied by increased CO2/CH4 selectivity and high water selective membrane at elevated temperatures without H2O/permanent gas selectivity loss.

Subject Areas

H2O permeability; inorganic nanoparticles; polyimide; activation energy; gas separation

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