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Operando infrared and inelastic neutron scattering studies of zeolite catalysed low-density polyethylene degradation

Year: 2025
Type: article
Abstract: The degradation of polyethylene (LDPE) by H-ZSM-5 is investigated by vibrational spectroscopy, using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and inelastic neutron scattering (INS). DRIFTS results indicate initial interaction between LDPE and external silanol groups, and hydrogen bonding with some Brønsted acid sites. At low temperatures both techniques suggest minimal interactions between the LDPE and the internal acid site of the zeolite, suggesting initial interactions are primarily with the zeolite surface. At higher reaction temperatures, oligomerisation is observed on Brønsted acid sites.
DOI: 10.1039/d4cc06209d
Authors: Emma Campbell, Katie S. C. Morton, Alexander J. O’Malley, Sandie E. Dann, Pierre Moreau, Ian P. Silverwood, Simon A. Kondrat, Andrew M. Beale, Matthew E. Potter
Institutions: Research Complex at Harwell, UK Catalysis Hub, Cardiff University, University of Bath, Loughborough University, Rutherford Appleton Laboratory, Science and Technology Facilities Council, ISIS Neutron and Muon Source, University College London
Language: English
Field: Chemistry
Open Access status: hybrid
OpenAlex ID: W4409037851
FWCI: 0.855
Cites: 28
Cited by: 4
Related to: 10