<em>N</em>-Aryl–linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures

doi:10.1126/science.aba9806

GSTDTAP > 气候变化

DOI	10.1126/science.aba9806
	N-Aryl–linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures
	Kirstie A. Thompson; Ronita Mathias; Daeok Kim; Jihoon Kim; Neel Rangnekar; J. R. Johnson; Scott J. Hoy; Irene Bechis; Andrew Tarzia; Kim E. Jelfs; Benjamin A. McCool; Andrew G. Livingston; Ryan P. Lively; M. G. Finn
	2020-07-17
发表期刊	Science
出版年	2020
英文摘要	Hydrocarbon distillation is a widespread and energy-intensive process. Membranes might offer an alternative approach, but few can survive immersion in organic solvents nor are they able to extract relatively small molecules. Thompson et al. developed a series of polymers of intrinsic microporosity that they used for membrane-based separations of organic compounds in an organic solvent (see the Perspective by Brennecke and Freeman). The new membrane has a molecular weight cutoff of 253 daltons, far lower than existing ones closer to 600 daltons. The polymers were used to separate light shale crude oil and succeeded in fractionation of molecular weights of about 170 daltons. Science this issue p. [310][1]; see also p. [254][2] 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. [1]: /lookup/doi/10.1126/science.aba9806 [2]: /lookup/doi/10.1126/science.abd1307
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/284352
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Kirstie A. Thompson,Ronita Mathias,Daeok Kim,等. N-Aryl–linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures[J]. Science,2020.
APA	Kirstie A. Thompson.,Ronita Mathias.,Daeok Kim.,Jihoon Kim.,Neel Rangnekar.,...&M. G. Finn.(2020).N-Aryl–linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures.Science.
MLA	Kirstie A. Thompson,et al."N-Aryl–linked spirocyclic polymers for membrane separations of complex hydrocarbon mixtures".Science (2020).