Microporous Mixed Matrix Membranes
Physical Sciences : Chemical
Available for licensing
- Douglas Lloyd, Ph.D. , Chemical Engineering
- Caleb Funk , Chemical Engineering
Dense mixed matrix membranes have been researched for many years since they are easier to produce than zeolite membranes, they are durable and flexible, and they offer a performance enhancement over polymer membranes. However, dense mixed matrix membranes have limited improved selectivity over pure polymer and the polymer-zeolite interphase formation directly affects the membrane’s performance.
Inventors at UT Austin have created a new high selectivity polymer-zeolite membrane structure that is useful for both water purification and gas separation. The new membrane structure consists of a microporous matrix of virtually impermeable polymer containing dispersed nano-porous zeolite particles. The matrix is formed in such a way that no microporous channel can reach completely across the membrane without blockage by at least one zeolite particle, forcing the permeate to diffuse through the zeolite particles.
- High structural rigidity
- Low costs
- Higher selectivity
- Increased flux
- Membranes can be formed as sheets or hollow fibers
- Allows gas or water to quickly reach the selective zeolite particles
Water purification; gas separation
- 1 U.S. patent issued: 8,211,951