N -Aryl-linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures

Science
Kirstie A ThompsonM G Finn

Abstract

The fractionation of crude-oil mixtures through distillation is a large-scale, energy-intensive process. Membrane materials can avoid phase changes in such mixtures and thereby reduce the energy intensity of these thermal separations. With this application in mind, we created spirocyclic polymers with N-aryl bonds that demonstrated noninterconnected microporosity in the absence of ladder linkages. The resulting glassy polymer membranes demonstrated nonthermal membrane fractionation of light crude oil through a combination of class- and size-based "sorting" of molecules. We observed an enrichment of molecules lighter than 170 daltons corresponding to a carbon number of 12 or a boiling point less than 200°C in the permeate. Such scalable, selective membranes offer potential for the hybridization of energy-efficient technology with conventional processes such as distillation.

References

May 15, 2013·Chemical Science·Nicholas C BrunoStephen L Buchwald
Oct 29, 2013·Physical Chemistry Chemical Physics : PCCP·Kyle E HartCoray M Colina
Apr 15, 2014·The Journal of Organic Chemistry·Nicholas C BrunoStephen L Buchwald
Oct 22, 2014·Chemical Reviews·Patrizia MarchettiAndrew G Livingston
May 3, 2016·Nature Materials·Maria F Jimenez-SolomonAndrew G Livingston
Oct 1, 2016·Chemical Reviews·Paula Ruiz-Castillo, Stephen L Buchwald
Jan 24, 2017·Nature Materials·William J Koros, Chen Zhang
Feb 23, 2017·Nature Materials·Ryan P Lively, David S Sholl

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Citations

Jul 18, 2020·Science·Joan F Brennecke, Benny Freeman
Apr 4, 2021·Membranes·Seungmin LeeSang-Hee Park

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