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USING SOFT-X-RAY ABSORPTION-SPECTROSCOPY TO EXAMINE THE STRUCTURAL-CHANGES TAKING PLACE AROUND SI AND AL ATOMS IN KAOLINITE FOLLOWING FLASH CALCINATION

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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. ISSN 0021-4922.

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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:
DateEvent
1993UNSPECIFIED
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

Data sourced from Thomson Reuters' Web of Knowledge

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