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Hydrothermal Synthesis of Hydroxyapatite and Pollucite from Calcium Phosphate

Published online by Cambridge University Press:  15 February 2011

Masaaki Kaneko ,
Yuichi Shoji ,
Hiroyuki Matsuura  and
Nakamichi Yamasaki
Masaaki Kaneko
Affiliation:
Chemical Technology Group Nuclear Engineering Laboratory, Toshiba Corporation, 4–1, UKISHIMA-CHO, KAWASAKI-KU, KAWASAKI, 210, JAPAN
Yuichi Shoji
Affiliation:
Chemical Technology Group Nuclear Engineering Laboratory, Toshiba Corporation, 4–1, UKISHIMA-CHO, KAWASAKI-KU, KAWASAKI, 210, JAPAN
Hiroyuki Matsuura
Affiliation:
Chemical Technology Group Nuclear Engineering Laboratory, Toshiba Corporation, 4–1, UKISHIMA-CHO, KAWASAKI-KU, KAWASAKI, 210, JAPAN
Nakamichi Yamasaki
Affiliation:
Research Laboratory of Hydrothermal Chemistry, Faculty of Science, Kochi University
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Abstract

Hydroxyapatite (HAP : Ca10(PO4 ) 6 (OH) 2 ) and aluminosili-cate were easily synthesized using a hydrothermal process with mixing ratios of Ca/P=1.67 (Ca(PO3)2 and Ca(OH)2) and Si/Al=4 (SiO2 and Al(OH)3). The temperature was kept constant at 573 K for 60 minutes. .Cesium (Cs) and Cerium (Ce) contained in Ca(PO3)2 , were found to take on a stable form in the pollucite (CsAlSi2O6) structure and the monazite (CePO4) structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 791
Copyright
Copyright © Materials Research Society 1995

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References

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