High-Resolution Transmission Electron Microscopy Study of a Powder River Basin Coal-Derived Fly Ash

James C. Hower; Debora Berti; Christopher R. Winkler; Dali Qian; Nicolas J. Briot

doi:10.3390/min12080975

High-Resolution Transmission Electron Microscopy Study of a Powder River Basin Coal-Derived Fly Ash

James C. Hower, Debora Berti, Christopher R. Winkler, Dali Qian, Nicolas J. Briot

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Examination of a fly ash derived from the combustion of a low-S, subbituminous Powder River Basin coal by Scanning Electron Microscopy (SEM) and High-resolution Transmission Electron Microscopy (HRTEM), both supplemented by Energy-dispersive X-ray spectroscopy (EDS), showed that the fly ashes were dominated by amorphous phases, Ca-rich plagioclase feldspars, Mg-rich phases, complex Ca-Mg-Al-Si-Ti-Fe grains, and trace amounts of REE-rich particles. Many of the particles were rimmed by a Ca-S, possibly a sulfate. HRTEM-EDS examination of a REE-rich particle proved it to be a mix of light- and heavy-rare earth minerals mixed with amorphous phases.

Original language	English
Article number	975
Journal	Minerals
Volume	12
Issue number	8
DOIs	https://doi.org/10.3390/min12080975
State	Published - Aug 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors.

Keywords

calcium
class C fly ash
lanthanides
subbituminous coal

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geology

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10.3390/min12080975

Cite this

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title = "High-Resolution Transmission Electron Microscopy Study of a Powder River Basin Coal-Derived Fly Ash",

abstract = "Examination of a fly ash derived from the combustion of a low-S, subbituminous Powder River Basin coal by Scanning Electron Microscopy (SEM) and High-resolution Transmission Electron Microscopy (HRTEM), both supplemented by Energy-dispersive X-ray spectroscopy (EDS), showed that the fly ashes were dominated by amorphous phases, Ca-rich plagioclase feldspars, Mg-rich phases, complex Ca-Mg-Al-Si-Ti-Fe grains, and trace amounts of REE-rich particles. Many of the particles were rimmed by a Ca-S, possibly a sulfate. HRTEM-EDS examination of a REE-rich particle proved it to be a mix of light- and heavy-rare earth minerals mixed with amorphous phases.",

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language = "English",

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AU - Hower, James C.

AU - Berti, Debora

AU - Winkler, Christopher R.

AU - Qian, Dali

AU - Briot, Nicolas J.

PY - 2022/8

Y1 - 2022/8

N2 - Examination of a fly ash derived from the combustion of a low-S, subbituminous Powder River Basin coal by Scanning Electron Microscopy (SEM) and High-resolution Transmission Electron Microscopy (HRTEM), both supplemented by Energy-dispersive X-ray spectroscopy (EDS), showed that the fly ashes were dominated by amorphous phases, Ca-rich plagioclase feldspars, Mg-rich phases, complex Ca-Mg-Al-Si-Ti-Fe grains, and trace amounts of REE-rich particles. Many of the particles were rimmed by a Ca-S, possibly a sulfate. HRTEM-EDS examination of a REE-rich particle proved it to be a mix of light- and heavy-rare earth minerals mixed with amorphous phases.

AB - Examination of a fly ash derived from the combustion of a low-S, subbituminous Powder River Basin coal by Scanning Electron Microscopy (SEM) and High-resolution Transmission Electron Microscopy (HRTEM), both supplemented by Energy-dispersive X-ray spectroscopy (EDS), showed that the fly ashes were dominated by amorphous phases, Ca-rich plagioclase feldspars, Mg-rich phases, complex Ca-Mg-Al-Si-Ti-Fe grains, and trace amounts of REE-rich particles. Many of the particles were rimmed by a Ca-S, possibly a sulfate. HRTEM-EDS examination of a REE-rich particle proved it to be a mix of light- and heavy-rare earth minerals mixed with amorphous phases.

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KW - class C fly ash

KW - lanthanides

KW - subbituminous coal

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High-Resolution Transmission Electron Microscopy Study of a Powder River Basin Coal-Derived Fly Ash

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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