Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/4921
Título: Aliphatic bio-oils from corks: a Py-Gc/MS study
Autor: Marques, António Velez
Pereira, Helena
Palavras-chave: Bark
Data: Set-2014
Editora: Elsevier Science BV
Citação: MARQUES, António Jorge Velez; PEREIRA, Helena – Aliphatic bio-oils from corks: A Py-Gc/MS study. Journal of Analytical and Applied Pyrolysis. ISSN: 0165-2370. Vol. 109 (2014), pp. 29-40
Resumo: Cork samples from Betula pendula, Quercus suber and Quercus cerris were submitted to Py-GC-MS/FID at temperatures between 550 degrees C and 900 degrees C and the pyrolysis-derived compounds (py-products) were identified and quantified. Corks were compared with wood samples. Py-products include suberin, lignin and carbohydrates derivatives. Suberin py-products are dominated by unsaturated aliphatics. Corks pyrolysis yield and composition were dramatically influenced by temperature in contrast to wood that showed stable results across temperatures. At 850-900 degrees C the peaks area of cork pyrograms were approximately two times higher than at 550 degrees C, for which yield was about half of the woods, and cork py-products were dominated by suberin-derived short chain aliphatics, namely 1-alkenes, while at 550 degrees C composition was dominated by lignin derivatives. Lignin and carbohydrate derived products decreased dramatically over 750 degrees C while the opposite was observed for unsaturated aliphatics. Cork materials show a high potential as feedstock for production of aliphatic-rich pyrolytic biofuels or as a source of olefins. (C) 2014 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/4921
DOI: 10.1016/j.jaap.2014.07.016
ISSN: 0165-2370
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos

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