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- W163059873 abstract "Publisher Summary This chapter reports preliminary work on six Australian coals by X-ray photoelectron spectroscopy (XPS). It presents the report on the gas chromatography (GC) analyses of the total pyrrolic and pyridinic structures of the volatiles for a particular coal, which have been pyrolysed at a range of temperatures. Coals were pyrolyzed in a fluidized bed reactor system. Char and tar were collected and extracted with dichloromethane. The solvent-tar mix was then examined by high resolution GC coupled to nitrogen specific and flame ionization detectors. Peaks were identified by comparison of retention times with those of standard materials, by use of a retention index system for nitrogen containing aromatics, and by GC/MS. Lumps of coal were spot sampled from 150 kg samples of coal and machined to an approximate size of 8 × 8 × 2 mm. These were then introduced into the preparation chamber of the spectrometer. The XPS results indicate that surface preparation is at least as important as anticipated and the N(ls) spectra are more complicated than expected from reports of previous investigations of Northern Hemisphere coals." @default.
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- W163059873 date "1991-01-01" @default.
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- W163059873 title "FUNCTIONAL FORMS OF NITROGEN IN COALS AND COAL VOLATILES IN RELATION TO NOx FORMATION" @default.
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- W163059873 doi "https://doi.org/10.1016/b978-0-7506-0387-4.50091-7" @default.
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