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

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

doi:10.1039/D4CC06209D

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

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

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	6603-6606
Number of pages	4
Journal	Chemical Communications
Volume	61
Issue number	36
Early online date	1 Apr 2025
DOIs	https://doi.org/10.1039/D4CC06209D
Publication status	Published - 1 Apr 2025

Data Availability Statement

INS data in this proposal was obtained on the TOSCA instrument, at the ISIS Neutron and Muon Source under experiment RB2220645. The DOI for this is: https://doi.org/10.5286/ISIS.E.RB2220645.

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title = "Operando infrared and inelastic neutron scattering studies of zeolite catalysed low-density polyethylene degradation",

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 Br{\o}nsted 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 Br{\o}nsted acid sites.",

author = "Emma Campbell and Morton, {Katie S. C.} and O{\textquoteright}Malley, {Alexander J.} and Dann, {Sandie E.} and Pierre Moreau and Silverwood, {Ian P.} and Kondrat, {Simon A.} and Beale, {Andrew M.} and Potter, {Matthew E.}",

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doi = "10.1039/D4CC06209D",

language = "English",

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TY - JOUR

T1 - Operando infrared and inelastic neutron scattering studies of zeolite catalysed low-density polyethylene degradation

AU - Campbell, Emma

AU - Morton, Katie S. C.

AU - O’Malley, Alexander J.

AU - Dann, Sandie E.

AU - Moreau, Pierre

AU - Silverwood, Ian P.

AU - Kondrat, Simon A.

AU - Beale, Andrew M.

AU - Potter, Matthew E.

PY - 2025/4/1

Y1 - 2025/4/1

N2 - 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.

AB - 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.

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U2 - 10.1039/D4CC06209D

DO - 10.1039/D4CC06209D

M3 - Article

SN - 1359-7345

VL - 61

SP - 6603

EP - 6606

JO - Chemical Communications

JF - Chemical Communications

IS - 36

ER -

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

Abstract

Data Availability Statement

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