Surface properties of photo-oxidized bituminous coals. Technical progress report, January 1995--March 1995

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During this report period, vitrinite concentrate samples were prepared from the Illinois No. 6 (DECS-24) and Lower Kittanning (PSOC-1562) seam samples that were collected last year. Some of the analytical information on these concentrates are provided. In addition, preparation of a surface-oxidized powdered vitrinite concentrate of the Pittsburgh seam (DECS-23) sample for microflotation experiments and pyrolysis GC/MS was initiated following development of a procedure for the irradiation sequence for this sample. Our collaborative efforts with Dr. Pigram of the University of New South Wales and Dr. Cody of Argonne National Laboratory have continued. As a result of problems in relocating ... continued below

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11 p.

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Mitchell, G.; Davis, A. & Chander, S. May 1995.

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  • Pennsylvania State University
    Publisher Info: Pennsylvania State Univ., University Park, PA (United States)
    Place of Publication: University Park, Pennsylvania

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Description

During this report period, vitrinite concentrate samples were prepared from the Illinois No. 6 (DECS-24) and Lower Kittanning (PSOC-1562) seam samples that were collected last year. Some of the analytical information on these concentrates are provided. In addition, preparation of a surface-oxidized powdered vitrinite concentrate of the Pittsburgh seam (DECS-23) sample for microflotation experiments and pyrolysis GC/MS was initiated following development of a procedure for the irradiation sequence for this sample. Our collaborative efforts with Dr. Pigram of the University of New South Wales and Dr. Cody of Argonne National Laboratory have continued. As a result of problems in relocating the irradiated areas prepared for Scanning Ion Mass Spectroscopy (SIMS), a new sample preparation technique was developed. This procedure involves the use of a finder grid that is attached to the coal surface allowing Dr. Pigram`s group to positively identify the affected area. A new ultrathinned section of the medium volatile Sewell seam (DECS-13) was prepared for Scanning Transmission X-ray Microscopy (STXM) and analyzed. Preliminary findings suggest the changes in oxygen functionality on the irradiated surfaces (1, 5 and 10 mins) of this coal compare well with that previously reported for the subbituminous Wyodak and high volatile Pittsburgh seam discussed in the last quarterly report. Kinetic data from evaluation of carbon near-edge x-ray adsorption fluorescence spectroscopy (C-NEXAFS) has yet to be completed.

Physical Description

11 p.

Notes

OSTI as DE95017223

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  • Other Information: PBD: May 1995

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  • Other: DE95017223
  • Report No.: DOE/PC/93223--T5
  • Grant Number: FG22-93PC93223
  • DOI: 10.2172/95525 | External Link
  • Office of Scientific & Technical Information Report Number: 95525
  • Archival Resource Key: ark:/67531/metadc794176

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  • May 1995

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  • Dec. 19, 2015, 7:14 p.m.

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  • Feb. 20, 2017, 1:16 p.m.

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Mitchell, G.; Davis, A. & Chander, S. Surface properties of photo-oxidized bituminous coals. Technical progress report, January 1995--March 1995, report, May 1995; University Park, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc794176/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.