Isopropyl-3-pentadecylphenyl phosphoric acid - a new reagent for liquid-liquid extraction and separation of rare earths

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Analytical Letters; (United States)

DOI:https://doi.org/10.1080/00032719308016819· OSTI ID:6709399

Sreelatha, S; Prasada Rao, T; Narayanan, C S; Damodaran, A D ^[1]

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1. Regional Research Lab., Trivandrum (India)

A new reagent isopropyl-3-pentadecylphenyl phosphoric acid (IPPA = HR) was synthesized from cardanol [I-37, 300-39-5] and was used to investigate the extraction behavior of lanthanum(III), europium(III) and lutetium(III) from HCl and HClO[sub 4] solutions into toluene. The species extracted were found to be Ln(HR[sub 2])[sub 3] (where Ln = La(III) or Eu(III) or Lu(III)). The extraction behavior of above lanthanides has also been compared with yttrium and other rare earths. It was observed that the extraction increases with increase of atomic number of rare earths. In addition the extraction efficiency of IPPA has been compared with well known acidic organophosphorus extractants like di-2-ethylhexyl phosphoric acid (DEHPA) and 2-ethylhexyl-mono-2-ethylhexyl phosphoric acid (EHEHPA). 6 refs., 5 figs., 3 tabs.

• OSTI ID: 6709399
• Journal Information: Analytical Letters; (United States), Vol. 26:3; ISSN 0003-2719
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
EUROPIUM
SOLVENT EXTRACTION
LANTHANUM
LUTETIUM
YTTRIUM
CATIONS
CHEMICAL PREPARATION
PHOSPHORIC ACID ESTERS
CHARGED PARTICLES
ELEMENTS
ESTERS
EXTRACTION
IONS
METALS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
RARE EARTHS
SEPARATION PROCESSES
SYNTHESIS
TRANSITION ELEMENTS
400105* - Separation Procedures