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Autores
Orientador(es)
Resumo(s)
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.
Descrição
Palavras-chave
Bark Biomass Bio-Oil Cork Pyrolysis Suberin
Contexto Educativo
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
Editora
Elsevier Science BV