Nanoporous membranes for gas separation
|Hydrogen separation from carbon monoxide and methane via a graphdiyne membrane|
Nanomaterials, Energy, Gas separation, Quantum dynamics, Nanoporous membranes, Membrane design, Quantum sieving, Transport
The separation of gases plays a key role in various processes from the industrial to the small scale, including applications such as hydrogen production from syngas, separating atmospheric gases for medical and industrial use, and isotope separation for nuclear power utilization. Among the diverse approaches for gas separation, membrane technology offers several benefits including facile operation, low energy consumption, and easy maintenance. During such a process, gas in a mixture is separated when it is forced to diffuse through a membrane by exploiting the differences in the relative capture/penetration rates of the gas components at the surface of the structure and/or relative diffusion rates of the gas components inside the structure. Normally two parameters can be used to describe the performance of a membrane, permeance and selectivity. Permeance indicates the membrane’s processing capacity per unit time: a high permeance means a high productivity of the membrane. Selectivity expresses the membrane’s capacity to separate a desired component from the feed mixture. Carbon materials are widely used in membrane gas separations, since carbon is abundant and controlled synthesis of its allotropes has been extensively studied. In particular, one would like to design and synthesize carbon membranes having desired functional properties. This objective can be greatly aided by molecular modelling, which is able to predict the relevant properties of the materials.
|Lead investigator||Professor Debra Bernhardt
|Research group||Bernhardt Group|