Observation of the chemical reaction equilibria of element 104, rutherfordium: solid–liquid extraction of Rf, Zr, Hf and Th with Aliquat 336 resin from HCl

Yokokita, Takuya; Kasamatsu, Y.; Kino, Aiko; Haba, Hiromitsu; Shigekawa, Yudai; Yasuda, Yuki; Nakamura, K.R.; Toyomura, Keigo; Komori, Yukiko; Murakami, Masashi; Yoshimura, Takashi; Takahashi, N.; Morita, Kosuke; Shinohara, Atsushi

doi:10.1039/c6dt03497g

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…Chloride complexation of Zr, Hf, and Rf using a solid–liquid extraction technique with Aliquat 336 resin (anion exchanger) in HCl at equilibrium was performed by Yokokita et al 59 ) They reported a similar result to that shown in Fig. 7 (a).…”

Section: Complex Formation Studies Of Rf and Dbmentioning

confidence: 69%

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

NAGAME,

SATO

2024

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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The chemical characterization of the heaviest elements at the farthest reach of the periodic table (PT) and the classification of these elements in the PT are undoubtedly crucial and challenging subjects in chemical and physical sciences. The elucidation of the influence of relativistic effects on their outermost electronic configuration is also a critical and fascinating aspect. However, the heaviest elements with atomic numbers Z ≳ 100 must be produced at accelerators using nuclear reactions of heavy ions and target materials. Therefore, production rates for these elements are low, and their half-lives are as short as a few seconds to a few minutes; they are usually available in a quantity of only a few atoms at a time. Here, we review some highlighted studies on heavy actinide and light transactinide chemical characterization performed at the Japan Atomic Energy Agency tandem accelerator facility. We discuss briefly the prospects for future studies of the heaviest elements.

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Section: Complex Formation Studies Of Rf and Dbmentioning

confidence: 69%

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

NAGAME,

SATO

2024

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

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“…This methodology also has a possibility of the first observation of the equilibrium of the chemical reactions for SHE. 33 In coprecipitation study, the coprecipitation method was proposed to investigate the hydroxide and ammine complexation of SHEs as a quite new method for SHE chemistry. In addition, good energy resolution in alpha spectroscopy was confirmed for precipitated samples.…”

Section: Resultsmentioning

confidence: 99%

“…Indeed, solid-liquid extraction experiment of 261 Rf with AMBER at RIKEN was recently achieved and interesting results were reported. 33…”

Section: Online Solid-liquid Extraction For Zr and Hfmentioning

confidence: 99%

Development of new methods for aqueous chemistry on element 104, rutherfordium: Batchtype solid-liquid extraction and coprecipitation

Kasamatsu

2018

Journal of Nuclear and Radiochemical Sciences

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Rapid chemical experiment targeting single atoms combined with identification via alpha-particle measurement is required for superheavy element chemistry. Herein, successful development of two types of experimental methods of superheavy element chemistry: solid-liquid extraction and precipitation, is presented. The chemical behaviors of Zr and Hf (homologues of element 104, Rf), and Th (pseudo homologue) were investigated using carrier-free RI tracers. Through these studies, rapid chemical reaction systems were found and the comparative data to discuss the chemical properties of Rf were obtained. In addition, automated chemistry apparatuses for extraction and precipitation were developed and their performance was evaluated using the short-lived isotopes of Zr and Hf, which were transported online from the nuclear reaction chamber in the accelerator room by a He/KCl gas-jet system. From those results, the newly developed methods were both found to be applicable to 261 Rf experiments, and suitable experimental conditions to study the chloride complexation (solid-liquid extraction) and hydroxide complexation (coprecipitation) of Rf were determined.

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Actinides and Transactinides

Nagame

Sato

Kratz

2020

Kirk-Othmer Encyclopedia of Chemical Technology

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This article gives a brief summary of the recent progress in the synthesis of new elements as well as heavy nuclei far from the stability line and in the studies of exotic nuclear decay properties including nuclear fission of heavy nuclei and chemical characterization of heavy actinides and transactinides. Experimental techniques of single‐atom detection after in‐flight separation with electromagnetic separators have made a breakthrough in discovery of new heavy isotopes. Development of automated rapid chemical separation apparatuses performing one atom‐at‐a‐time chemistry has also considerably contributed to the progress of chemical studies of the transactinides. Some key experiments exploring new frontiers of the production and chemical characterization of heavy actinides and transactinides using state‐of‐the‐art techniques are demonstrated. A short historical perspective of actinide and transactinide elements and some prospects of extending nuclear and chemical studies of heavy elements in the future are briefly presented.

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Observation of the chemical reaction equilibria of element 104, rutherfordium: solid–liquid extraction of Rf, Zr, Hf and Th with Aliquat 336 resin from HCl

Cited by 8 publications

References 23 publications

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

Chemical characterization of heavy actinides and light transactinides – Experimental achievements at JAEA

Development of new methods for aqueous chemistry on element 104, rutherfordium: Batchtype solid-liquid extraction and coprecipitation

Actinides and Transactinides

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