Scientists at Queen's, who invented a liquid that can dissolve remarkably large amounts of gas, have launched a new spin-out company Porous Liquid Technologies Ltd.
"Porous liquids are a new class of liquid materials that contain microscopic cavities or pores, each the size of a single molecule. They contain up to 10,000 times the number of cavities that are found in conventional liquids, and up to around 20 per cent of the liquid is actually empty space – creating new substances with a far greater absorption capacity than the base solvents.
"Thanks to these cavities, porous liquids can absorb large amounts of gas and they can be tuned to selectively absorb one gas over another. The major benefit of porous liquids is that, unlike solids, they can be circulated, meaning that they can be applied in a host of processes. They can be used in continuous flow separations, such as the removal of impurities from natural gas, which currently relies on inefficient and energy-intensive methods.
"Porous liquids could be used as replacements for liquid absorption systems based on conventional liquids, such as amine solutions. Currently, 40 per cent of natural gas reserves are contaminated with impurities that need to be removed but the existing technology for removing the impurities requires large amounts of heat energy. The new material would be much more energy efficient."
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