Published January 1999 | Version v1
Book Metadata-only

Dissolution studies on microwave synthesized nanocrystalline thoria powder in nitric acid medium

Creators

  • 1. Fuel Chemistry Div., Indira Gandhi Centre for Atomic Research, Kalpakkam (India)

Description

Dissolution of thorium dioxide in concentrated nitric acid is extremely slow. Dissolution study of thoric powder prepared by microwave denitration were carried out. The results of the experiments demonstrated for the first time that nanocrystalline thorium dioxide powder prepared by direct denitration of an aqueous solution of thorium nitrate in the presence of polyvinyl alcohol (PVA) by using microwave heating and calcined at 600 deg C can be dissolved completely in 7.5 M boiling nitric acid medium in the absence of fluoride. Dissolution rate of the powder samples increases with the decrease in calcination temperature. (author)

Part of:
Proceedings of nuclear and radiochemistry symposium

Additional details

Publishing Information

Publisher
Bhabha Atomic Research Centre
Imprint Place
Mumbai (India)
Imprint Title
Proceedings of nuclear and radiochemistry symposium
Imprint Pagination
466 p.
Journal Page Range
p. 219-220

Conference

Title
nuclear and radiochemistry symposium
Acronym
NUCAR 99
Dates
19-22 Jan 1999
Place
Mumbai (India)

INIS

Country of Publication
India
Country of Input or Organization
India
INIS RN
30044024
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CALCINATION; CHEMICAL REACTION KINETICS; DENITRATION; DISSOLUTION; NITRIC ACID; PVA; SOLVENT EXTRACTION; TEMPERATURE DEPENDENCE; THORIUM NITRATES; THORIUM OXIDES
Descriptors DEC
ACTINIDE COMPOUNDS; ALCOHOLS; CHALCOGENIDES; CHEMICAL REACTIONS; DECOMPOSITION; EXTRACTION; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; KINETICS; NITRATES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; OXIDES; OXYGEN COMPOUNDS; POLYMERS; POLYVINYLS; PYROLYSIS; REACTION KINETICS; SEPARATION PROCESSES; THERMOCHEMICAL PROCESSES; THORIUM COMPOUNDS

Optional Information

Notes
6 refs., 1 fig., 2 tabs.