Designed channels in thin benzimidazole-linked polymer membranes for hot H2 purification

Sub-micro porous thin polymer membranes for discriminating H2 and CO2

“…Ultra-thin BIALP membranes were synthesized with improved sieving capability. The separation performances were evaluated with an equimolar, continuous flow H 2 /CO 2 mixture as feed using the Wicke-Kallenbach method 20 , 22 .…”

Molecular‐scale hybrid membranes: Metal‐oxo cluster crosslinked benzimidazole‐linked polymer membranes for superior H2 purification

“…Very recently, the H 2 /CO 2 separation performance of BILP‐101x membranes was further improved by post‐thermal and crosslinking treatment. At 573 K, 1 bar feed pressure, an H 2 /CO 2 selectivity up to 56.3 with a corresponding H 2 permeance of 127 GPU was achieved 8 …”

“…The key of membrane technology lies in the development of high-performance membranes with good thermal stability and high-pressure resistance. 8 There are many types of membranes reported to separate H 2 from CO 2 . Inorganic membranes, such as palladium membranes, 9 zeolite membranes, 10 and transition metal carbides membranes, 11 showed high permeance or selectivity to H 2 .…”

“…At 573 K, 1 bar feed pressure, an H 2 /CO 2 selectivity up to 56.3 with a corresponding H 2 permeance of 127 GPU was achieved. 8 Metal-oxo clusters (MOCs) refer to a class of discrete nanoclusters comprised of groups III-VI metals linked by oxygen atoms. 31 Especially, Zr-oxo clusters have appropriate Zr-atomic size ($155 pm) and strong Zr-O bond strength, which is conducive to the preservation of inorganic cores and rarely collapse.…”

“…The processes are gradually developing to a process with low energy consumption, short treatment cycle and small footprint, such as membrane separation technology. The key of membrane technology lies in the development of high‐performance membranes with good thermal stability and high‐pressure resistance 8 …”