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

被引：22

作者：

Wasserman, SR

Winans, RE

McBeth, R

机构：

[1] Chemistry Division, Argonne National Laboratory, Argonne, IL 60439

来源：

ENERGY & FUELS | 1996年 / 10卷 / 02期

关键词：

D O I：

10.1021/ef950154d

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Iron K-edge X-ray absorption spectroscopy (XAS) has been used to examine the iron species that are present within the Argonne Premium Coal Samples. This technique was applied to both native coal samples and ones which had been extracted with concentrated hydrochloric acid. The near-edge absorption spectra (XANES) were analyzed using a deconvolution procedure to determine the relative amounts of ore-ferrous, oxo-ferric, and pyritic environments in the coals. Three coals, Beulah-Zap, Wyodak-Anderson, and Lewiston-Stockton, apparently contain significant amounts of ferric species. Extended X-ray absorption fine structure (EXAFS) spectra were used to confirm the pyritic contents that were deduced from the near-edge spectra.

引用

页码：392 / 400

页数：9

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