Overcoming Fundamental Limitations in Adsorbent Design: Alkene Adsorption by Non-porous Copper(I) Complexes

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dc.contributor.authorParasar D
dc.contributor.authorElashkar AH
dc.contributor.authorYakovenko AA
dc.contributor.authorJayaratna NB
dc.contributor.authorEdwards BL
dc.contributor.authorTelfer SG
dc.contributor.authorDias HVR
dc.contributor.authorCowan, Matthew Greig
dc.date.accessioned2025-02-13T22:17:59Z
dc.date.available2025-02-13T22:17:59Z
dc.date.issued2020
dc.description.abstractPurifying alkenes from alkanes requires cryogenic distillation. This consumes energy equivalent to countries of ca. 5 million people. Replacing distillation with adsorption processes would significantly increase energy efficiency. Trade-offs between kinetics, selectivity, capacity, and heat of adsorption have prevented production of an optimal adsorbent. We report adsorbents that overcome these trade-offs. [Cu-Br]3 and [Cu-H]3 are air-stable trinuclear complexes that undergo reversible solid-state inter-molecular rearrangements to produce dinuclear [Cu-Br⋅(alkene)]2 and [Cu-H⋅(alkene)]2. The reversible solid-state rearrangement, confirmed in situ using powder X-ray diffraction, allows adsorbent design trade-offs to be overcome, coupling low heat of adsorption (−10 to −17 kJ mol−1alkene), high alkene:alkane selectivity (47; 29), and uptake capacity (>2.5 molalkene mol−1Cu3). Most remarkably, [Cu-H]3 displays fast uptake and regenerates capacity within 10 minutes.
dc.identifier.citationParasar D, Elashkar AH, Yakovenko AA, Jayaratna NB, Edwards BL, Telfer SG, Dias HVR, Cowan MG (2020). Overcoming Fundamental Limitations in Adsorbent Design: Alkene Adsorption by Non-porous Copper(I) Complexes. Angewandte Chemie - International Edition. 59(47). 21001-21006.
dc.identifier.doihttp://doi.org/10.1002/anie.202010405
dc.identifier.issn1433-7851
dc.identifier.issn1521-3773
dc.identifier.urihttps://hdl.handle.net/10092/107217
dc.languageeng
dc.publisherWiley
dc.rightsAll rights reserved unless otherwise stated
dc.rights.urihttp://hdl.handle.net/10092/17651
dc.subjectX-ray diffraction
dc.subjectadsorption
dc.subjectalkenes
dc.subjectcopper
dc.subjectolefin separation
dc.subject.anzsrc34 - Chemical sciences::3405 - Organic chemistry::340505 - Physical organic chemistry
dc.subject.anzsrc40 - Engineering::4004 - Chemical engineering::400409 - Separation technologies
dc.subject.anzsrc40 - Engineering::4004 - Chemical engineering::400403 - Chemical engineering design
dc.titleOvercoming Fundamental Limitations in Adsorbent Design: Alkene Adsorption by Non-porous Copper(I) Complexes
dc.typeJournal Article
uc.collegeFaculty of Engineering
uc.departmentChemical and Process Engineering
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