Reducing CO2 emissions is an urgent issueadsorption technologies based on solid adsorbents are considered a promising approach for CO2 capture. Pressure swing adsorption (PSA) shows potential to lower the environmental, energy,economic costs of CO2 separations. In this technology, a porous molecular crystal (PMC) assembled by close packing of macrocyclic organic molecules is used as an efficient adsorbent for CO2 capture. The eluted N2CH4 by PSA are obtained with over 99.999.8 purity, respectively.

For the first time, a crystalline organic porous material is applied as an efficient pressure swing adsorption (PSA) adsorbent for CO2 separations. In addition to its suitableuniform pore size for CO2 capture, this material exhibits high CO2 affinity, excellent water tolerance, high structural stability,ease of regeneration. Discrete organic molecules that comprise this material are lightweight, easily synthesized, solution-processable, recyclable,environmentally friendly, features which are essential for sustainable, economic-energy-efficient industrial manufacturing.

This technology allows efficient CO2 capturefacile adsorbent regeneration at ambient environment, which will greatly reduce the costs of carbon capture. It is very promising for the pre-treatment of industrial flue gasthe upgrading of natural gas. The recovered CO2 can also be converted to high value chemical products. Moreover, whoever possessing advanced carbon-capture technologies will have an advantage in carbon right,much more profit can be gained through carbon trade.

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