Molecular structure of bituminous coal studied with pulse nuclear magnetic resonance

Jurkiewicz, Antoni; Marzec, Anna; Piślewski, N.

doi:10.1016/0016-2361(82)90011-4

Cited by 75 publications

(21 citation statements)

References 9 publications

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“…20%, extract yield and is in line with the total PO NMP retention. The sums of the4 weights of extract NMP and the weights of NMP washed from the residue agree well with the weight increase upon extraction for the PO, LS and BC coals. The shortfalls, which represent NMP that cannot be washed from the residue, are about 8 g (UF), 15 g (PI), 20 g (IL) and 40 g 0hrA) per 100 g organic matter.…”

supporting

confidence: 66%

A study of coal extraction with electron paramagnetic resonance (EPR) and proton nuclear magnetic resonance relaxation techniques. Quarterly technical progress report, April 1, 1993--June 30, 1993

Doetschman¹,

Mehlenbacher

Ito

1993

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This report was prepared as an account of work sponsored-by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

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supporting

confidence: 66%

A study of coal extraction with electron paramagnetic resonance (EPR) and proton nuclear magnetic resonance relaxation techniques. Quarterly technical progress report, April 1, 1993--June 30, 1993

Doetschman¹,

Mehlenbacher

Ito

1993

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“…A new dimension has been added to consideration of the smaller molecules in coals by recent studies of a group of Polish workers (Jurkiewicz et a/., 1982Marzec et ai, 1983;Szeliga and Marzec, 1983;Marzec and Kisielow, 1983). These authors start from the conclusions of the earlier investigation of solvent extraction (Marzec et ai, 1979).…”

Section: The Mobile Phasementioning

confidence: 99%

“…The coal studied in the first work reported in this area (Jurkiewicz et al, 1982) was of Carboniferous age, from a Polish mine, and of 82% carbon content. The coal studied in the first work reported in this area (Jurkiewicz et al, 1982) was of Carboniferous age, from a Polish mine, and of 82% carbon content.…”

Section: The Mobile Phasementioning

confidence: 99%

An Essay on the Organic Geochemistry of Coal

Given¹

1984

Coal Science

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“…This can be interpreted that some of the hydrogen is present in molecules free to rotate, but yet trapped and unextractable, inside the macromolecular network of coal. The discovery of this phenomenon was reported by Jurkiewicz et al (1982) and Marzec et al (1983). Not all workers are convinced that these results indicate that some molecules are trapped inside the coal matrix.…”

Section: Conclusion and Hypothesismentioning

confidence: 93%