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Volumn 10, Issue 2, 1996, Pages 392-400

Iron species in argonne premium coal samples: An investigation using x-ray absorption spectroscopy

Author keywords

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Indexed keywords


EID: 0001167519     PISSN: 08870624     EISSN: None     Source Type: Journal    
DOI: 10.1021/ef950154d     Document Type: Article
Times cited : (22)

References (41)
  • 3
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    • Durham, P. J. In ref 2, Chapter 2
    • Durham, P. J. In ref 2, Chapter 2.
  • 4
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    • Meuzelaar, H. L. C., Ed.; Plenum Press: New York, and references contained therein
    • Huffman, G. P.; Huggins, F. E.; Shah, N. In Advances in Coal Spectroscopy; Meuzelaar, H. L. C., Ed.; Plenum Press: New York, 1992; pp 29-47 and references contained therein.
    • (1992) Advances in Coal Spectroscopy , pp. 29-47
    • Huffman, G.P.1    Huggins, F.E.2    Shah, N.3
  • 15
    • 85033843434 scopus 로고
    • Palmer, C. A., Walthall, F. G., Eds.; U.S. Geological Survey, Open File Report 91-638
    • Palmer, C. A. In The Chemical Analysis of Argonne Premium Coal Samples; Palmer, C. A., Walthall, F. G., Eds.; U.S. Geological Survey, Open File Report 91-638, 1992; pp 86-98.
    • (1992) The Chemical Analysis of Argonne Premium Coal Samples , pp. 86-98
    • Palmer, C.A.1
  • 20
    • 85033837589 scopus 로고    scopus 로고
    • XAMath is available on the World Wide Web at
    • XAMath is available on the World Wide Web at http://xafsdb. iit.edu:80/exafs-database/programs/XAMath/.
  • 22
    • 85033842145 scopus 로고    scopus 로고
    • note
    • The percent of iron which is present as pyrite in each coal can be deduced from data contained in the Argonne Premium Coal Sample Handbook (ref 21). The analyzed amount of pyritic sulfur in the dried APCS measures a corresponding amount of pyritic iron. The conversion factor from pyritic sulfur to iron is 0.871, the ratio of the atomic weights of one iron atom and two sulfur atoms. The resultant quantities of pyritic iron were divided by the total iron in the coal, as determined by neutron activation analysis (ref 15), to estimate the fraction of iron that is in pyritic form. Similar results are obtained if the ferric oxide content of the high temperature ash is used as the measure of the total amount of iron in each coal.
  • 24
    • 0004048530 scopus 로고
    • Bianconi, A., Incoccia, L., Stipcich, S., Eds.; Springer-Verlag: Berlin, The energy scales in this reference are approximately 21 eV below the correct values
    • Petiau, J.; Calas, G. In EXAFS and Near Edge Structure; Bianconi, A., Incoccia, L., Stipcich, S., Eds.; Springer-Verlag: Berlin, 1983; pp 144-146. The energy scales in this reference are approximately 21 eV below the correct values.
    • (1983) EXAFS and Near Edge Structure , pp. 144-146
    • Petiau, J.1    Calas, G.2
  • 26
    • 0003930973 scopus 로고
    • Cambridge University Press: Cambridge, U. K.
    • Evans, R. C. Crystal Chemistry; Cambridge University Press: Cambridge, U. K., 1964; pp 174-176.
    • (1964) Crystal Chemistry , pp. 174-176
    • Evans, R.C.1
  • 30
  • 32
    • 0001822952 scopus 로고
    • Newman, A. C. D., Ed.; Longman Scientific and Technical: Harlow, Essex, England, Chapter 1
    • Newman, A. C. D.; Brown, G. In Chemistry of Clays and Clay Minerals; Newman, A. C. D., Ed.; Longman Scientific and Technical: Harlow, Essex, England, 1987; Chapter 1.
    • (1987) Chemistry of Clays and Clay Minerals
    • Newman, A.C.D.1    Brown, G.2
  • 35
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    • Mössbauer Analysis of Iron-Bearing Phases in Coal, Coke, and Ash
    • Karr, Jr., C., Ed.; Academic Press: New York
    • Huggins, F. E.; Huffman, G. P. Mössbauer Analysis of Iron-Bearing Phases in Coal, Coke, and Ash. In Analytical Methods for Coal and Coal Products; Karr, Jr., C., Ed.; Academic Press: New York, Vol. III, 1979; pp 371-423.
    • (1979) Analytical Methods for Coal and Coal Products , vol.3 , pp. 371-423
    • Huggins, F.E.1    Huffman, G.P.2
  • 39
    • 85033866927 scopus 로고    scopus 로고
    • note
    • 3, and pyrite as the model compounds.
  • 40
    • 85033870317 scopus 로고    scopus 로고
    • note
    • Reference 21, p 23. The amounts of ferric oxide were determined by multiplying the percent of ferric oxide in each ash by the total ash from each sample.


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