Science· 2017Q1· Review
Maximizing the right stuff: The trade-off between membrane permeability and selectivity
- 3,230citations
- Q1SCImago
- 2017year
Short summary
Novel separation membranes are crucial for energy-efficient processes, but face a fundamental trade-off between permeability and selectivity. Emerging materials, inspired by biological membranes, are beginning to overcome this challenge.
AI-generated from the title and abstract; the full text is not read.
Key points
- Separation membranes face a ubiquitous trade-off between permeability (how much passes through) and selectivity (how well it separates).
- This trade-off limits performance in critical applications like water purification, petroleum refining, and carbon capture.
- Emerging membrane materials, inspired by biological membranes, are beginning to achieve both high permeability and high selectivity.
- Factors beyond permeability and selectivity also influence membrane performance and design.
AI-generated from the title and abstract; the full text is not read.
Abstract
Increasing demands for energy-efficient separations in applications ranging from water purification to petroleum refining, chemicals production, and carbon capture have stimulated a vigorous search for novel, high-performance separation membranes. Synthetic membranes suffer a ubiquitous, pernicious trade-off: highly permeable membranes lack selectivity and vice versa. However, materials with both high permeability and high selectivity are beginning to emerge. For example, design features from biological membranes have been applied to break the permeability-selectivity trade-off. We review the basis for the permeability-selectivity trade-off, state-of-the-art approaches to membrane materials design to overcome the trade-off, and factors other than permeability and selectivity that govern membrane performance and, in turn, influence membrane design.
The authors' abstract, as published at the source. Science, 2017 · DOI ↗
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Field: Mechanical Engineering
Mechanical EngineeringEngineering