COAL AND CHAR STUDIES BY ADVANCED EMR TECHNIQUES

Belford, R. Linn ; Clarkson, Robert B. ; Nilges, Mark J. ; Odintsov, Boris M. ; Smirnov, Alex I.

National Energy Technology Laboratory (U.S.)

关键词: Fuel Slurries;    Electron Spin Resonance;    01 Coal, Lignite, And Peat;    Interfaces;    Coal;   

DOI  :  10.2172/791711
RP-ID  :  FG22-96PC96205--08
RP-ID  :  FG22-96PC96205
RP-ID  :  791711

美国|英语

来源: UNT Digital Library

【 摘 要 】

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.