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Carbon monoxide and oxygen can be separated by membrane technology, which is a well-established research direction in the field of gas separation and can be achieved.
There are differences in molecular diameters and polarization properties between CO and O₂ molecules, providing a thermodynamic basis for membrane separation. However, conventional polymer membranes are difficult to achieve efficient separation.
Currently, this is mainly achieved through molecular sieve membranes, metal-organic framework membranes, and facilitating transfer membranes. Among them, facilitating transfer membranes use carriers to selectively complex with CO, which can significantly improve the separation selectivity.
However, this technology still has issues such as insufficient stability, difficulty in balancing high throughput and high selectivity, and easy deactivation under industrial conditions. It has not been widely adopted yet.
The improvement directions focus on the design of new functional membrane materials, optimization of carrier stability, and precise control of process conditions to enhance separation performance and service life.
