Distribution Behavior of Nb, Ta, and Pa as Homologues of Db in Cation Exchange and Solid-Liquid and Liquid-Liquid Extractions by Aliquat 336 from Hydrochloric Acid

Abstract

Detailed chemical studies on transactinide elements will clarify their characteristic properties caused by strong relativistic effect. In this work, to realize chemical study on transactinide element ₁₀₅Db, cation exchange, and solid-liquid and liquid-liquid extractions of micro amounts of Nb, Ta (homologues of Db), and Pa (pseudo homologue) by Aliquat 336 were performed employing hydrochloric acid. Clearly different chloride complex formations and distribution reaction kinetics were observed among these elements, and the present results are useful for studying the chemical properties of Db. Based on these results, we propose suitable experimental conditions for Db.

Keywords:

• Niobium (Nb)
• Tantalum (Ta)
• Protactinium (Pa)
• Cation exchange
• Extraction by Aliquat 336
• Hydrochloric acid (HCl)

Additional information

Funding

This work was supported by JSPS KAKENHI Grant Number 23750082.