Published July 1989 | Version v1
Journal article Metadata-only

Lanthanum purification by extractive crystallization

Creators

  • 1. Moskovskij Inst. Tonkoj Khimicheskoj Tekhnologii, Moscow (USSR)

Description

Scheme of lanthanum compound purification from more heavy lanthanide impurities and coloring d-element impurities by means of extractive crystallization using tributyl phosphate and di-2-ethylhexylphosphoric acid is suggested. Technique of preliminary saturation of extractants by prepurified lanthanum salt was used. Purification was carried out using cross current scheme. Organic phase impurities were sorbed in the column with BAU activated carbon. Purification three stages reduce lanthanide content in product by one order. Comparison of impurity content in purified lanthanum oxide and LaO-D-type series-produced one is conducted

Additional details

Additional titles

Original title (Russian)
Очистка лантана экстрактивной кристаллизацией
Augmented title (English)
Impurities: rare earths and colouring d-elements

Publishing Information

Journal Title
Vysokochistye Veshchestva
Journal Issue
no.2
Series
Vysokochist. Veshchestva.
ISSN
0235-0122
CODEN
VYVEE

INIS

Country of Publication
Russian Federation
Country of Input or Organization
USSR
INIS RN
21013311
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ACTIVATED CARBON; CRYSTALLIZATION; DISTRIBUTION FUNCTIONS; HDEHP; LANTHANUM COMPOUNDS; PURIFICATION; SOLVENT EXTRACTION; TBP; TRACE AMOUNTS
Descriptors DEC
ADSORBENTS; BUTYL PHOSPHATES; CARBON; ELEMENTS; ESTERS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PHASE TRANSFORMATIONS; PHOSPHORIC ACID ESTERS; RARE EARTH COMPOUNDS; SEPARATION PROCESSES