학술논문

Molecular and morphological characterization of hydrochar produced by microwave-assisted hydrothermal carbonization of cellulose
Document Type
article
Source
Pesquisa Agropecuária Brasileira. May 2012 47(5)
Subject
anthropogenic dark earth of Amazonia
biochar
charcoal
gas chromatography
mass spectrometry
nuclear magnetic resonance
Language
English
ISSN
0100-204X
Abstract
The objective of this work was to characterize the morphology and molecular composition of the hydrochar produced by microwave-assisted hydrothermal carbonization of cellulose. The produced hydrochar consists mainly of aggregate microspheres with about 2.0 µm in diameter, with aliphatic and aromatic structures and the presence of carbonyl functional groups. The aromatic groups are formed mainly by benzofuran-like structures, being chemically different from common cellulose char. Microwave-assisted hydrothermal carbonization yields a functionalized carbon-rich material similar to that produced by the conventional hydrothermal process.