PMID- 38105396
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240304
IS  - 1521-3773 (Electronic)
IS  - 1433-7851 (Linking)
VI  - 63
IP  - 11
DP  - 2024 Mar 11
TI  - Consumer Grade Polyethylene Recycling via Hydrogenolysis on Ultrafine Supported 
      Ruthenium Nanoparticles.
PG  - e202317526
LID - 10.1002/anie.202317526 [doi]
AB  - Catalytic hydrogenolysis has the potential to convert high-density polyethylene 
      (HDPE), which comprises about 30 % of plastic waste, into valuable alkanes. Most 
      investigations have focused on increasing activity for lab grade HDPEs displaying 
      low molecular weight, with limited mechanistic understanding of the product 
      distribution. No efficient catalyst is available for consumer grades due to their 
      lower reactivity. This study targets HDPE used in bottle caps, a waste form 
      generated globally at a rate of approximately one million units per hour. 
      Ultrafine ruthenium particles (1 nm) supported on titania (anatase) achieved up 
      to 80 % conversion into light alkanes (C(1) -C(45) ) under mild conditions 
      (498 K, 20 bar H(2) , 4 h) and were reused for three cycles. Small ruthenium 
      nanoparticles were critical to achieving relevant conversions, as activity 
      sharply decreased with particle size. Selectivity commonalities and peculiarities 
      across HDPE grades were disclosed by a reaction modelling approach applied to 
      products. Isomerization cedes to backbone scission as the reaction progresses. 
      Within this trend, low molecular weight favor isomerization whilst high molecular 
      weight favor cleavage. Commercial caps obeyed this trend with decreased activity, 
      anticipating the influence of additives in realistic processing. This study 
      demonstrates effective hydrogenolysis of consumer grade polyethylene and provides 
      selectivity patterns for product control.
CI  - (c) 2023 The Authors. Angewandte Chemie International Edition published by 
      Wiley-VCH GmbH.
FAU - Jaydev, Shibashish D
AU  - Jaydev SD
AUID- ORCID: 0000-0002-7251-273X
AD  - Institute of Chemical and Bioengineering, Department of Chemistry and Applied 
      Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland.
FAU - Martin, Antonio J
AU  - Martin AJ
AUID- ORCID: 0000-0003-3482-8829
AD  - Institute of Chemical and Bioengineering, Department of Chemistry and Applied 
      Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland.
FAU - Usteri, Marc-Eduard
AU  - Usteri ME
AUID- ORCID: 0000-0002-9874-2736
AD  - Institute of Chemical and Bioengineering, Department of Chemistry and Applied 
      Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland.
FAU - Chikri, Katia
AU  - Chikri K
AD  - Institute of Chemical and Bioengineering, Department of Chemistry and Applied 
      Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland.
FAU - Eliasson, Henrik
AU  - Eliasson H
AUID- ORCID: 0000-0003-2975-0334
AD  - Electron Microscopy Center, Swiss Federal Laboratories for Materials Science and 
      Technology, Uberlandstrasse 129, 8600, Dubendorf, Switzerland.
FAU - Erni, Rolf
AU  - Erni R
AUID- ORCID: 0000-0003-2391-5943
AD  - Electron Microscopy Center, Swiss Federal Laboratories for Materials Science and 
      Technology, Uberlandstrasse 129, 8600, Dubendorf, Switzerland.
FAU - Perez-Ramirez, Javier
AU  - Perez-Ramirez J
AUID- ORCID: 0000-0002-5805-7355
AD  - Institute of Chemical and Bioengineering, Department of Chemistry and Applied 
      Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093, Zurich, Switzerland.
LA  - eng
GR  - ETH-40 20-2/Eidgenossische Technische Hochschule Zurich/
GR  - 180544/NCCR Catalysis/
PT  - Journal Article
DEP - 20231228
PL  - Germany
TA  - Angew Chem Int Ed Engl
JT  - Angewandte Chemie (International ed. in English)
JID - 0370543
SB  - IM
OTO - NOTNLM
OT  - Chemical Plastic Recycling
OT  - Heterogenous Catalysis
OT  - Polyethylene Hydrogenolysis
OT  - Ruthenium Nanoparticles
OT  - Selectivity
EDAT- 2023/12/18 00:42
MHDA- 2023/12/18 00:43
CRDT- 2023/12/17 23:52
PHST- 2023/11/17 00:00 [received]
PHST- 2023/12/18 00:43 [medline]
PHST- 2023/12/18 00:42 [pubmed]
PHST- 2023/12/17 23:52 [entrez]
AID - 10.1002/anie.202317526 [doi]
PST - ppublish
SO  - Angew Chem Int Ed Engl. 2024 Mar 11;63(11):e202317526. doi: 
      10.1002/anie.202317526. Epub 2023 Dec 28.