Upcycling Single-Use Polyethylene into High-Quality Liquid Products

dc.contributor.author Celik, Gokhan
dc.contributor.author Kennedy, Robert
dc.contributor.author Hackler, Ryan
dc.contributor.author Sadow, Aaron
dc.contributor.author Ferrandon, Magali
dc.contributor.author Tennakoon, Akalanka
dc.contributor.author Patnaik, Smita
dc.contributor.author LaPointe, Anne
dc.contributor.author Ammal, Salai
dc.contributor.author Heyden, Andreas
dc.contributor.author Perras, Frédéric
dc.contributor.author Pruski, Marek
dc.contributor.author Scott, Susannah
dc.contributor.author Poeppelmeier, Kenneth
dc.contributor.author Sadow, Aaron
dc.contributor.author Delferro, Massimiliano
dc.contributor.department Ames National Laboratory
dc.contributor.department Chemistry
dc.date 2020-03-02T23:00:53.000
dc.date.accessioned 2020-06-29T23:24:18Z
dc.date.available 2020-06-29T23:24:18Z
dc.date.issued 2019-11-27
dc.description.abstract <p>Our civilization relies on synthetic polymers for all aspects of modern life; yet, inefficient recycling and extremely slow environmental degradation of plastics are causing increasing concern about their widespread use. After a single use, many of these materials are currently treated as waste, underutilizing their inherent chemical and energy value. In this study, energy-rich polyethylene (PE) macromolecules are catalytically transformed into value-added products by hydrogenolysis using well-dispersed Pt nanoparticles (NPs) supported on SrTiO3 perovskite nanocuboids by atomic layer deposition. Pt/SrTiO3 completely converts PE (<em>M</em>n = 8000–158,000 Da) or a single-use plastic bag (<em>M</em>n = 31,000 Da) into high-quality liquid products, such as lubricants and waxes, characterized by a narrow distribution of oligomeric chains, at 170 psi H2 and 300 °C under solvent-free conditions for reaction durations up to 96 h. The binding of PE onto the catalyst surface contributes to the number averaged molecular weight (<em>M</em>n) and the narrow polydispersity (<em>Đ</em>) of the final liquid product. Solid-state nuclear magnetic resonance of 13C-enriched PE adsorption studies and density functional theory computations suggest that PE adsorption is more favorable on Pt sites than that on the SrTiO3 support. Smaller Pt NPs with higher concentrations of undercoordinated Pt sites over-hydrogenolyzed PE to undesired light hydrocarbons.</p>
dc.identifier archive/lib.dr.iastate.edu/ameslab_manuscripts/597/
dc.identifier.articleid 1604
dc.identifier.contextkey 16696013
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_manuscripts/597
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/7534
dc.language.iso en
dc.relation.ispartofseries IS-J 10111
dc.source.bitstream archive/lib.dr.iastate.edu/ameslab_manuscripts/597/IS_J_10111.pdf|||Sat Jan 15 01:04:29 UTC 2022
dc.source.uri 10.1021/acscentsci.9b00722
dc.subject.disciplines Materials Chemistry
dc.title Upcycling Single-Use Polyethylene into High-Quality Liquid Products
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication a9d328ff-ec5e-4d1d-8c2f-aed9d5a290ed
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication 42864f6e-7a3d-4be3-8b5a-0ae3c3830a11
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