Mechanism and Kinetics of Palladium Extraction with β-Hydroxyoxime

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yoshikazu Miyake¹  Atsumi Okada¹  Katsuhiko Wakishige¹  Masaaki Teramoto¹  Makoto Harada¹ 

[1] Department of Chemistry and Materials Technology, Kyoto Institute of Technology

关键词: Solvent Extraction;    Palladium;    Extraction Rate;    Extraction Mechanism;    Hydroxyoxime;   

DOI  :  10.1252/jcej.23.319

来源: Maruzen Company Ltd

【 摘 要 】

References(16)Cited-By(3)Extraction rates of palladium(II) with 2-hydroxy-5-nonyl acetophenone oxime were measured by use of a Lewis-type cell to elucidate the extraction mechanism. It was found that the rate of complex formation both at the interface and in the aqueous phase was determined by the 1:1 complex formation between trihalo complex of palladium, PdX3(H2O)– and the neutral species of β-hydroxyoxime, HR. The extraction rate of the bromo complex of palladium was faster than that of the chloro complex. The rate constants for the complex formation obtained from the extraction rate were compatible with those obtained in an 80 wt% ethanol–water mixture.

【 授权许可】

Unknown