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Title: Advanced solids NMR studies of coal structure and chemistry. Progress report, March 1 - September 1, 1996

Abstract

This report covers the progress made on the title project for the project period. The study of coal chemical structure is a vital component of research efforts to develop better chemical utili- zation of coals, and for furthering our basic understanding of coal geochemistry. In this grant we are addressing several structural questions pertaining to coals with advances in state of the art solids NMR methods. Our goals are twofold. First, we are interested in developing new methods that will enable us to measure important structural parameters in whole coals not directly accessible by other techniques. In parallel with these efforts we will apply these NNM methods in a study of the chemical differences between gas-sourcing and oil-sourcing coals. The NMR methods work will specifically focus on determination of the number and types of methylene groups, determination of the number and types of methine groups, identification of carbons adjacent to nitrogen and sites with exchangeable protons, and methods to more finely characterize the distribution of hydrogen in coals. We will also develop NMR methods for probing coal macropore structure using hyperpolarized {sup 29}Xe as a probe, and study the molecular dynamics of what appear to be mobile, CH{sub 2} rich,more » long chain hydrocarbons. The motivation for investigating these specific structural features of coals arises from their relevance to the chemical reactivity of coals, and their suitability for possible correlations with the oil sourcing potential of some types of coals. The coals to be studied and contrasted include oil-prone coals from Australia and Indonesia, those comprising the Argonne Premium Coal Sample bank, and other relevant samples.« less

Authors:
 [1]
  1. Yale Univ., New Haven, CT (United States). Dept. of Chemistry
Publication Date:
Research Org.:
Thermochem, Inc., Columbia, MD (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
OSTI Identifier:
468462
Report Number(s):
DOE/PC/95227-2
ON: DE97051886
DOE Contract Number:  
FG22-95PC95227
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1996]
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; STRUCTURAL CHEMICAL ANALYSIS; NMR SPECTRA; PROGRESS REPORT; NUCLEAR MAGNETIC RESONANCE; XENON 129; EXPERIMENTAL DATA

Citation Formats

Zilm, K.W. Advanced solids NMR studies of coal structure and chemistry. Progress report, March 1 - September 1, 1996. United States: N. p., 1996. Web. doi:10.2172/468462.
Zilm, K.W. Advanced solids NMR studies of coal structure and chemistry. Progress report, March 1 - September 1, 1996. United States. doi:10.2172/468462.
Zilm, K.W. Tue . "Advanced solids NMR studies of coal structure and chemistry. Progress report, March 1 - September 1, 1996". United States. doi:10.2172/468462. https://www.osti.gov/servlets/purl/468462.
@article{osti_468462,
title = {Advanced solids NMR studies of coal structure and chemistry. Progress report, March 1 - September 1, 1996},
author = {Zilm, K.W.},
abstractNote = {This report covers the progress made on the title project for the project period. The study of coal chemical structure is a vital component of research efforts to develop better chemical utili- zation of coals, and for furthering our basic understanding of coal geochemistry. In this grant we are addressing several structural questions pertaining to coals with advances in state of the art solids NMR methods. Our goals are twofold. First, we are interested in developing new methods that will enable us to measure important structural parameters in whole coals not directly accessible by other techniques. In parallel with these efforts we will apply these NNM methods in a study of the chemical differences between gas-sourcing and oil-sourcing coals. The NMR methods work will specifically focus on determination of the number and types of methylene groups, determination of the number and types of methine groups, identification of carbons adjacent to nitrogen and sites with exchangeable protons, and methods to more finely characterize the distribution of hydrogen in coals. We will also develop NMR methods for probing coal macropore structure using hyperpolarized {sup 29}Xe as a probe, and study the molecular dynamics of what appear to be mobile, CH{sub 2} rich, long chain hydrocarbons. The motivation for investigating these specific structural features of coals arises from their relevance to the chemical reactivity of coals, and their suitability for possible correlations with the oil sourcing potential of some types of coals. The coals to be studied and contrasted include oil-prone coals from Australia and Indonesia, those comprising the Argonne Premium Coal Sample bank, and other relevant samples.},
doi = {10.2172/468462},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {12}
}