Current Status and Future Prospect of Polymer‐Layered Silicate Mixed‐Matrix Membranes for CO₂/CH₄ Separation

Abstract

The mixed‐matrix membrane (MMM), a state‐of‐the‐art polymer‐inorganic hybrid, is a relatively recent addition to the membrane family which adopts the synergistic advantages of the polymer and inorganic phase. Although marked improvement has been achieved by MMMs in CO2/CH4 separation, the development of a defect‐free structure to transcend the Robeson upper bound limit remains a challenge. In previous years, a number of inorganic materials with diverse nature have been studied for CO2/CH4 separation; however, layered silicates have not attracted much attention despite their superior thermal and mechanical properties. Analyses of the potential of using layered silicates as inorganic fillers in MMM fabrication for CO2/CH4 separation are reviewed. Additionally, the immediate challenges toward successful formation of layered silicate‐based MMM and future prospects are addressed.

Comparison of Flat and Hollow‐Fiber Mixed‐Matrix Composite Membranes for CO2 Separation with Temperature

“…It can be observed that the supports used in this work are not CO 2 -selective and the selectivity is close to the Knudsen selectivity for the CO 2 /N 2 gas pair (0.80), which means this is the gas transport mechanism dominating gas transfer through the support that only offers mechanical strength [8] and attributes any differences in permselectivity for the composite membranes' performance to the selective coated layer. Although the permeance through the supports used in this work is lower than some literature values, they are similar to others [8,9,12,[34][35][36][37][38][39][40][41], as collected in Tab. 1, probably because of the differences between considered thickness and measurement procedures from one work to another.…”

Natural Calcium‐Based Sorbents Doped with Sea Salt for Cyclic CO2 Capture

“…Consequently, large‐scale CO 2 capture and sequestration (CCS) studies have recently received worldwide attention . Various materials, such as, lithium silicate , magnesium oxide , sodium or potassium bicarbonate , , calcium oxide , ionic liquids , carbon dioxide binding organic liquids , , and mixed‐matrix membranes , have been proposed to scrub CO 2 on a large scale. Calcium‐looping , technology has received widespread attention as one of the most promising methods to capture CO 2 during coal gasification processes, sorption‐enhanced stream processes (SESRs), and large‐scale post‐combustion CO 2 ‐capture processes.…”

Tuning the gas separation performance of fluorinated and sulfonated PEEK membranes by incorporation of zeolite 4A

“…Mixed matrix membranes (MMMs) are innovative class of membranes having potential for superior separation properties . In principal, inorganic fillers are embedded in an organic matrix to enhance stability, permeability, and selectivity of membranes.…”