Study of metallofullerenes encapsulating actinides

Akiyama, Kazuhiko; Sueki, Keisuke*; Tsukada, Kazuaki; Yaita, Tsuyoshi; Miyake, Yoko*; Haba, Hiromitsu*; Asai, Masato; Kodama, Takeshi*; Kikuchi, Koichi*; Otsuki, Tsutomu*; et al.

Journal of Nuclear and Radiochemical Sciences, 3(1), p.151 - 154, 2002/06

https://doi.org/10.14494/jnrs2000.3.151

The oxidation state of actinide elements encapsulated in fullerenes is studied. HPLC elution behavior of actinide-fullerenes is classified into two groups; the elution behavior of the first group, encapsulating U, Np, and Am, is similar to that of the light lanthanide-fullerenes, such as La, Ce, Pr, and Nd, while the behavior of the second group, encapsulating Th and Pa, is quite different from that of any lanthanide-fullerenes. The chemical species in the main HPLC elution peak of each group were identified as M@C82 and M@C84 (M = metal atom) from the mass of the U and Th fullerenes, respectively. The oxidation states of the U and Th atoms in the fullerenes were deduced to be 3+ and 4+, respectively, from the UV/vis/NIR absorption and XANES spectroscopy.

Iodine behavior during dissolution process within NUCEF-BECKY

Kihara, Takehiro; Sakurai, Tsutomu*; *; Fujine, Sachio

Proc. of 5th Int. Nucl. Conf. on Recycling, Conditioning and Disposal (RECOD '98), 1, p.830 - 837, 1998/00

no abstracts in English

None

*;

PNC TN8410 95-215, 67 Pages, 1995/07

PNC-TN8410-95-215.pdf:5.7MB

None

Speciation of uranium in aqueous solutions and in precipitates by photoacoustic spectroscopy

Kimura, Takaumi; J.G.Serrano*; ; *; Takeishi, Hideyo

Radiochimica Acta, 58-59, p.173 - 178, 1992/00

https://doi.org/10.1524/ract.1992.5859.1.173

no abstracts in English

Development of photoacoustic spectroscopy for speciation of actinide elements in aqueous solution and in solid phase

Kimura, Takaumi;

3rd Int. Symp. on Advanced Nuclear Energy Research; Global Environment and Nuclear Energy, 6 Pages, 1991/00

no abstracts in English