Catalytic upcycling of high-density polyethylene via a processive mechanism
Journal Article
·
· Nature Catalysis
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
- Cornell Univ., Ithaca, NY (United States)
- Univ. of South Carolina, Columbia, SC (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
The overconsumption of single-use plastics is creating a global waste catastrophe, with widespread environmental, economic and health-related consequences. In this work we show that the benefits of processive enzyme-catalysed conversions of biomacromolecules can be leveraged to affect the selective hydrogenolysis of high-density polyethylene into a narrow distribution of diesel and lubricant-range alkanes using an ordered, mesoporous shell/active site/core catalyst architecture that incorporates catalytic platinum sites at the base of the mesopores. Solid-state nuclear magnetic resonance revealed that long hydrocarbon macromolecules readily move within the pores of this catalyst, with a subsequent escape being inhibited by polymer–surface interactions, a behaviour that resembles the binding and translocation of macromolecules in the catalytic cleft of processive enzymes. Accordingly, the hydrogenolysis of polyethylene with this catalyst proceeds processively to yield a reliable, narrow and tunable stream of alkane products.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- Grant/Contract Number:
- AC02-06CH11357; AC02-07CH11358
- OSTI ID:
- 1700695
- Alternate ID(s):
- OSTI ID: 1706641
OSTI ID: 1712698
- Report Number(s):
- IS--J-10,271; IS--J-10,293
- Journal Information:
- Nature Catalysis, Journal Name: Nature Catalysis Journal Issue: 11 Vol. 3; ISSN 2520-1158
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Size-Controlled Nanoparticles Embedded in a Mesoporous Architecture Leading to Efficient and Selective Hydrogenolysis of Polyolefins
Journal Article
·
Wed Feb 23 00:00:00 UTC 2022
· Journal of the American Chemical Society
·
OSTI ID:1856850