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Title: Time domain-nuclear magnetic resonance study of chars from southern hardwoods

Author: Elder, Thomas; Labbe, Nicole; Harper, David; Rials, Timothy;

Date: 2006

Source: Biomass and Bioenergy, Vol. 30: 855-862

Publication Series: Miscellaneous Publication

Description: Chars from the thermal degradation of silver maple (Acer saccharinum), red maple (Acer rubrum), sugar maple (Acer saccharum), and white oak (Quercus spp.), performed at temperatures from 250 to 350 oC, were examined using time domain-nuclear magnetic resonance spectroscopy. Prior to analysis, the chars were equilibrated under conditions insuring the presence of bound water only and both bound water and free water. Transverse relaxation times were found to be related to the moisture content of the chars, which varied with temperature. At elevated temperatures the number of signals assigned to free water decreased, indicative of an increase in pore size within the chars.

Keywords: char, moisture content, relaxation, southern hardwoods, time domain-nuclear magnetic resonance

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Elder, Thomas; Labbe, Nicole; Harper, David; Rials, Timothy 2006. Time domain-nuclear magnetic resonance study of chars from southern hardwoods. Biomass and Bioenergy, Vol. 30: 855-862


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