Spin-mapping of coal structures with ESE and ENDOR

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Advanced EPR methods have demonstrated cability for study of molecular components (including organic sulfur) in coal. We have constructed a unique Very High Frequency Electron Paramagnetic Resonance (VHF EPR) instrument operating at the W-band (96 GHz), one of only two such instruments in the world, and the only one studying coal. We are employing this instrument, as well as collaborating with scientists at Cornell University who have constructed a 250 GHz EPR spectrometer, to develop a clearer understanding of the relationships between the VHF EPR spectra we observe from Illinois coal and the organic sulfur species present in it. Work ... continued below

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Pages: (13 p)

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Belford, R.L. & Clarkson, R.B. March 1, 1991.

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Description

Advanced EPR methods have demonstrated cability for study of molecular components (including organic sulfur) in coal. We have constructed a unique Very High Frequency Electron Paramagnetic Resonance (VHF EPR) instrument operating at the W-band (96 GHz), one of only two such instruments in the world, and the only one studying coal. We are employing this instrument, as well as collaborating with scientists at Cornell University who have constructed a 250 GHz EPR spectrometer, to develop a clearer understanding of the relationships between the VHF EPR spectra we observe from Illinois coal and the organic sulfur species present in it. Work this Quarter for this DOE grant (supplemented by a one-year award through the Illinois Center for Research on Sulfur in Coal and also reported to that agency) has focussed on three main area: (1) synthesis and analysis of model systems for thiophenic sulfur species in coal; (2) Electron Spin Echo and VHF EPR of inertinites from an Illinois {number sign}6 coal, as well as evaluation of the sensitivity of the signals from this maceral to oxygen; (3) VHF EPR of iodinated coals. 1 ref., 8 figs.

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Pages: (13 p)

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  • Other: DE92000295
  • Report No.: DOE/PC/88921-10
  • Grant Number: FG22-88PC88921
  • DOI: 10.2172/5370050 | External Link
  • Office of Scientific & Technical Information Report Number: 5370050
  • Archival Resource Key: ark:/67531/metadc1074918

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Office of Scientific & Technical Information Technical Reports

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  • March 1, 1991

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • March 5, 2018, 4:43 p.m.

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Belford, R.L. & Clarkson, R.B. Spin-mapping of coal structures with ESE and ENDOR, report, March 1, 1991; United States. (digital.library.unt.edu/ark:/67531/metadc1074918/: accessed May 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.