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Accession number;02A0620440
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| Title;Reaction between cerium trifluoride and elementary fluorine. |
| Author;
KIM J
(Fukui Univ., Fac. of Eng.)
YONEZAWA SUSUMU
(Fukui Univ., Fac. of Eng.)
TAKASHIMA MASAYUKI
(Fukui Univ., Fac. of Eng.)
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Journal Title;Fusso Kagaku Toronkai Koen Yoshishu
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Journal Code:F0135B
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ISSN:
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VOL.25th;NO.;PAGE.103-105(2001)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Cerium tetrafluoride (CeF4) was synthesized from cerium trifluoride (CeF3) by the direct fluorination with fluorine gas. The two kinds of CeF4 which are metastable CeF4 (CeF4-I) and stable CeF4 (CeF4-II) could be synthesized. The CeF4-I formed at a temperature up to 543K returned to CeF3 with releasing elementary fluorine under the dynamic evaculation (104Pa) or even in the fluorine (26.7kPa). As the results of X-ray diffraction-Rietveld analysis, the structure of CeF4-I was determined as a monoclinic structure (a=12.61.ANGS., b=10.63.ANGS., c=8.22.ANGS., .BETA.=126.06.DEG.). And the cell volume of the CeF4-I was a little bit larger than that of the CeF4-II. (author abst.) |
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