Data/hora: 22/06/2024 01:13:33

Biblioteca(s): 	Embrapa Florestas.	
Data corrente: 	06/11/2009	
Data da última atualização: 	24/02/2015	
Autoria: 	GUIOTOKU, M.; RAMBO, C. R.; HANSEL, F. A.; MAGALHAES, W. L. E.; HOTZA, D.	
Afiliação: 	MARCELA GUIOTOKU, CNPF; CARLOS RENATO RAMBO, UFSC; FABRICIO AUGUSTO HANSEL, CNPF; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; DACHAMIR HOTZA, UFSC.	
Título: 	Microwave-assisted hydrothermal carbonization of lignocellulosic materials.	
Ano de publicação: 	2009	
Fonte/Imprenta: 	Materials Letters, v. 63, p. 2707-2709, 2009.	
Idioma: 	Inglês	
Conteúdo: 	A new microwave-assisted hydrothermal carbonization (MAHC) method is reported in this work. The process uses microwave heating at 200 °C in acidic aqueous media to carbonize pine sawdust (Pinus sp.) and ?-cellulose (Solucell®) at three different reaction times. Elemental analysis showed that the lignocellulosic samples subjected to MAHC yielded carbon-enriched material 50% higher than raw materials. Increase in aromaticity was confirmed by a van Krevelen diagram. SEM micrographs detected no morphological changes in pine sawdust. In contrast, SEM micrographs of carbonized ?-cellulose revealed spherical-shaped particles with diameters ranging from 1 to 2 ?m. These results showed that microwave-assisted hydrothermal carbonization is an innovative approach to obtain carbonized lignocellulosic materials.	
Palavras-Chave: 	Lignocelulose.	
Categoria do assunto: 	W Química e Física	
Registro original: 	Embrapa Florestas (CNPF)	
Exemplares: 	CNPF - (46098-1) - UPC - AP - DD -  -  -  - DIS