Open AccessCOAL AND CHAR STUDIES BY ADVANCED EMR TECHNIQUES
Author(s) -
R. Linn Belford,
R. B. Clarkson,
Mark J. Nilges,
B. M. Odintsov,
Alex I. Smirnov
Publication year - 2001
Language(s) - English
Resource type - Reports
DOI - 10.2172/791711
Subject(s) - char , coal , nuclear magnetic resonance , particulates , resonance (particle physics) , slurry , materials science , chemistry , organic chemistry , atomic physics , physics , composite material
Advanced electronic magnetic resonance (EMR) as well as nuclear magnetic resonance (NMR) methods have been used to examine properties of coals, chars, and molecular species related to constituents of coal. During the span of this grant, progress was made on construction and applications to coals and chars of two high frequency EMR systems particularly appropriate for such studies--48 GHz and 95 GHz electron magnetic resonance spectrometer, on new low-frequency dynamic nuclear polarization (DNP) experiments to examine the interaction between water and the surfaces of suspended char particulates in slurries, and on a variety of proton nuclear magnetic resonance (NMR) techniques to measure characteristics of the water directly in contact with the surfaces and pore spaces of carbonaceous particulates