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Published VersionCC BY V4.0, Open Access
Journal article
Deactivation of chromated copper arsenate as a catalyst in smouldering of wood
Journal of Analytical and Applied Pyrolysis, Vol.183, pp.1-10
2024
Abstract
Chromated copper arsenate (CCA) is a preservative treatment that enhances the biodegradation resistance of wood, essential for prolonging the service life of exterior infrastructure. However, the susceptibility of CCA-treated wood to smouldering combustion presents a significant challenge, as the metals present in the CCA catalyze the smouldering. In this work, we examined the oxidative behaviour of char produced from CCA-treated wood through dynamic thermogravimetric analysis. There was a gradual decrease in the catalytic activity of the CCA as temperature increased, particularly above 400 °C. At this stage, lignin undergoes secondary pyrolysis, and thermal decomposition of CCA complexes occurs. The thermal decomposition of CCA-treated wood at temperatures above 650 °C was similar to that of untreated wood, indicating the possible deactivation of the CCA. The agglomeration of species containing Cu or Cr above 650 °C might be responsible for the deactivation. This process is influenced by simultaneous lignin pyrolysis and decomposition of CCA complexes, which are also likely contributors to the loss of CCA's catalytic activity. This research introduced a novel experimental approach to assess the catalytic effects of CCA on char oxidation at elevated temperatures, offering valuable insights into CCA deactivation and its implications for fire safety. It also contributes to the development of potential modifications to CCA formulations aimed to reduce smouldering in wildfire-prone regions.
Details
- Title
- Deactivation of chromated copper arsenate as a catalyst in smouldering of wood
- Authors
- Wenxuan Wu (Corresponding Author) - The University of QueenslandFelix Wiesner - University of British ColumbiaJuan P. Hidalgo - The University of QueenslandJeffrey J. Morrell - Oregon State University, USLuis Yermán Martinez (Author) - The University of Queensland
- Publication details
- Journal of Analytical and Applied Pyrolysis, Vol.183, pp.1-10
- Publisher
- Elsevier BV
- Date published
- 2024
- DOI
- 10.1016/j.jaap.2024.106824
- ISSN
- 1873-250X; 0165-2370
- Copyright note
- © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
- Data Availability
- Data will be made available on request.
- Grant note
- This research was supported by the National Centre for Timber Durability and Design Life (Prof Dr Tripti Singh, Director), a collaborative program between the University of the Sunshine Coast, The University of Queensland, and the Queensland Department of Agriculture and Fisheries and funded by Forest and Wood Products Australia.
- Organisation Unit
- National Centre for Timber Durability and Design Life
- Language
- English
- Record Identifier
- 991076697802621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Chemistry, Analytical
- Energy & Fuels
- Engineering, Chemical