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Quantification of nitrogen functional groups in coal and coal derived products

✍ Scribed by Stephen Wallace; Keith D. Bartle; David L. Perry

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 654 KB
Volume: 68
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(89)90044-6

No coin nor oath required. For personal study only.

✦ Synopsis

The identification and quantification of the nitrogen functions in coal and coal-derived liquids is important for the development of coal liquid-fuel processing technologies. This paper reports a method that provides a self-consistent analysis of nitrogen functionality in both solid coal and coal liquids. It involves the use of X-ray photoelectron spectroscopy (XPS), combined with potentiometric titration and i.r. spectroscopy, to provide an analysis of pyrrole-and pyridine-type functionality. The study has led to a revised value for the extinction coefficient of the N-H stretching i.r. absorption for coal-derived asphaltenes.

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