Recent Developments in High-Performance Membranes for CO2 Separation.

Zi Tong,Ali Sekizkardes

doi:10.3390/membranes11020156

Abstract

In this perspective article, we provide a detailed outlook on recent developments of high-performance membranes used in CO2 separation applications. A wide range of membrane materials including polymers of intrinsic microporosity, thermally rearranged polymers, metal–organic framework membranes, poly ionic liquid membranes, and facilitated transport membranes were surveyed from the recent literature. In addition, mixed matrix and polymer blend membranes were covered. The CO2 separation performance, as well as other membrane properties such as film flexibility, processibility, aging, and plasticization, were analyzed.

Highlights

Despite the remarkable renewable energy capacities being operated around the world, global CO2 concentrations continue to rise
The state-ofthe-art membranes utilized in industry are heavily dependent on conventional membrane materials such as cellulose acetate, polysulfone, polydimethylsiloxane, polyethylene oxide, etc
The gas separation performance of PIM membranes has been unprecedented compared to other rigid polymers, such as matrimid, and over 100 times higher CO2 permeability was achieved by PIMs

Summary

Introduction

Despite the remarkable renewable energy capacities being operated around the world, global CO2 concentrations continue to rise. As a result of the specific reaction between CO2 and the amine carrier, facilitated transport membranes usually possess high selectivity. They later used the prolinate ionic liquid carrier and achieved an ultra-high CO2 permeability of 52,000 Barrer and CO2/N2 selectivity of 8100 at 30 ◦C, 70% relative humidity (RH) and 0.1 KPa of CO2 partial pressure, showing great promise for the direct capture of CO2 from the atmosphere [13].

Results

Conclusion