UNSPECIFIED (1993) USING SOFT-X-RAY ABSORPTION-SPECTROSCOPY TO EXAMINE THE STRUCTURAL-CHANGES TAKING PLACE AROUND SI AND AL ATOMS IN KAOLINITE FOLLOWING FLASH CALCINATION. In: 7TH INTERNATIONAL CONF ON X-RAY ABSORPTION FINE STRUCTURE ( XAFS 7 ), KOBE, JAPAN, AUG 23-29, 1992. Published in: JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 32 (Suppl. 32-2). pp. 652-654.

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Abstract

Structural changes associated with the flash calcination of china clay (Al2O32SiO22H2O) have been investigated using soft X-ray absorption spectroscopy (XANES and EXAFS) at the Al and Si K edges. The data reveal substantial changes to the atomic environment around the Al atomic sites with a reduction of Al-O bond distances from 1.92 angstrom to 1.81 angstrom associated with a change from 6 to 4 coordination. The changes in the structural environment around Si are found to be more subtle with Si remaining tetrahedrally coordinated.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QC Physics
Journal or Publication Title:	JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
Publisher:	JAPAN J APPLIED PHYSICS
ISSN:	0021-4922
Official Date:	1993
Dates:	Date Event 1993 UNSPECIFIED
Volume:	32
Number:	Suppl. 32-2
Number of Pages:	3
Page Range:	pp. 652-654
Publication Status:	Published
Title of Event:	7TH INTERNATIONAL CONF ON X-RAY ABSORPTION FINE STRUCTURE ( XAFS 7 )
Location of Event:	KOBE, JAPAN
Date(s) of Event:	AUG 23-29, 1992
URI:	http://wrap.warwick.ac.uk/id/eprint/21141

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