Studies on the extraction of uranium by N-octanoyl-N-phenylhydroxamic acid
- 1. Fuel Chemistry Div., Indira Gandhi Centre for Atomic Research, Kalpakkam (India)
- 2. Campion Higher Secondary School, Tiruchirapalli (India)
Description
N-octanoyl-N-phenylhydroxamic acid (OHA) has been prepared by partial reduction of nitrobenzene with Zn dust/NH4Cl, followed by acylation with n-octanoyl chloride. Structure of OHA was confirmed by 1H NMR, IR spectra and CHNS microanalysis. The extraction of uranium by OHA has been studied as a function of pH, temperature and concentration of OHA. The extraction of uranium was found to increase with increase in pH. Uranium forms a 1 : 2 complex with OHA. IR Spectra and NMR Spectra of the uranium-OHA complex and slope analysis obtained from extraction studies indicated that the extraction of uranium was due to the formation of a chelate. The enthalpy change accompanied by the extraction of uranium by OHA has been obtained by temperature variation method. The extraction process was found to be endothermic at pH 2 and exothermic at pH 6. (orig.)
Additional details
Publishing Information
- Journal Title
- Radiochimica Acta
- Journal Volume
- 90
- Journal Issue
- 8
- Journal Page Range
- p. 455-459
- ISSN
- 0033-8230
- CODEN
- RAACAP
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 33069323
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- CHELATING AGENTS; CHEMICAL PREPARATION; CHEMICAL REACTION KINETICS; HYDROXAMIC ACIDS; INFRARED SPECTRA; PH VALUE; SOLVENT EXTRACTION; STOICHIOMETRY; TEMPERATURE DEPENDENCE; ULTRAVIOLET SPECTRA; URANIUM; VISIBLE SPECTRA
- Descriptors DEC
- ACTINIDES; AMINES; ELEMENTS; EXTRACTION; HYDROXY COMPOUNDS; KINETICS; METALS; ORGANIC COMPOUNDS; REACTION KINETICS; SEPARATION PROCESSES; SPECTRA; SYNTHESIS