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

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Title: N-Aryl-linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures
Authors: Thompson, KA
Mathias, R
Kim, D
Kim, J
Rangnekar, N
Johnson, JR
Hoy, SJ
Bechis, I
Tarzia, A
Jelfs, KE
McCool, BA
Livingston, A
Lively, RP
Finn, MG
Item Type: Journal Article
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.
Issue Date: 17-Jul-2020
Date of Acceptance: 22-May-2020
URI: http://hdl.handle.net/10044/1/80778
DOI: 10.1126/science.aba9806
ISSN: 0036-8075
Publisher: American Association for the Advancement of Science
Start Page: 310
End Page: 315
Journal / Book Title: Science
Volume: 369
Issue: 6501
Copyright Statement: © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works https://www.sciencemag.org/about/science-licenses-journal-article-reuseThis is an article distributed under the terms of the Science Journals Default License.
Sponsor/Funder: Exxonmobil Research and Engineering Company
The Royal Society
Commission of the European Communities
The Royal Society
The Royal Society
Funder's Grant Number: EM11231-01
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
General Science & Technology
Publication Status: Published
Online Publication Date: 2020-07-17
Appears in Collections:Chemistry
Chemical Engineering
Faculty of Natural Sciences
Faculty of Engineering