High performance mixed matrix membranes (MMMs) composed of ZIF-94 filler and 6FDA-DAM polymer
Author/s
Etxeberria-Benavides, Miren; David, Oana; Johnson, Timothy; Łozińska, Magdalena M.; Orsi, Angelica; [et al.]Date
2018-03-15Keywords
Atomic force microscopy
Carbon
Carbon capture
CO2 capture
Metal organic frameworks
Mixed matrix membrane
ZIF-94
Gas permeable membranes
Abstract
Carbon capture and storage (CCS) using membranes for the separation of CO2 holds great promise for the reduction of atmospheric CO2 emissions from fuel combustion and industrial processes. Among the different process outlines, post-combustion CO2 capture could be easily implemented in existing power plants. However, for this technology to become viable, new membrane materials have to be developed. In this article we present the development of high performance mixed matrix membranes (MMMs) composed of ZIF-94 filler and 6FDADAM polymer matrix. The CO2/N2 separation performance was evaluated by mixed gas tests (15CO2:85N2) at 25 °C and 1–4 bar transmembrane pressure difference. The CO2 membrane permeability was increased by the addition of the ZIF-94 particles, maintaining a constant CO2/N2 selectivity of ~22. The largest increase in CO2 permeability of ~ 200% was observed for 40 wt% ZIF-94 loading, reaching the highest permeability (2310 Barrer) at similar selectivity among 6FDA-DAM MMMs ...
Type
article