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Study of sulphur in Assam coals by X-ray photoelectron spectroscopy

✍ Scribed by Samarendra N. Dutta; Dulal Dowerah; David C. Frost

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 171 KB
Volume: 62
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(83)90038-8

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✦ Synopsis

X-ray photoelectron spectroscopy (XPS) has been used to study the nature and content of sulphur contained in coal samples from Assam. In each case two sulphur 2p (S 2p) peaks were observed. The 169-I 71 eV 2p peak corresponds to sulphate, whilst the 164-I 65 eV peak is assigned to S in iron sulphide compounds such as pyrite, marcasite, etc. and also organic sulphur. The complete absence of a 169-I 71 eV S peak from a coal sample from which both pyritic and sulphate sulphur were removed by hydrodesulphurization strongly indicates that the remaining 164.7 eV S 2p peak corresponds to the total organic sulphur present in the coal.

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