Crystalline Thorium Borate

Journal Article · Fri Sep 01 00:00:00 EDT 1961 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1151-2916.1961.tb13755.x· OSTI ID:4840293

BASKIN, Y.; HARADA, Y.; HANDWERK, J. H.

Crystalline thorium borate (ThB₂O₅) was synthesized by the reaction of thoria with boric oxide at elevated temperatures; crystals suitable for single-crystal x-ray studies were grown in molten boric oxide at 1300 deg C. Crystallographic, chemical, and some physical properties of thorium borate crystals are presented as well as the results of a preliminary phase study of the system ThO₂-- B₂0₃. Amorphous thorium borate gel, formed by reaction of aqueous solutions of borax and thorium nitrate, is transformed into crystalline thorium borate and thoria on firing at elevated temperatures. Boric oxide does not appear to react with either zirconium oxide or uranium dioxide to form any crystalline compounds. The fact that uranium dioxide does not react with boric oxide, but thoria does, affords a basis for effecting a chemical separation of the two oxides from thoria-urania solid solutions. Preliminary data on the reactions between boric oxide and different thoria-urania solid solutions are given.

• Research Organization: Illinois Inst. of Tech., Chicago; and Argonne National Lab., Ill.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-029744
• OSTI ID: 4840293
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 9 Vol. 44; ISSN 0002-7820
• Publisher: American Ceramic Society
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORATES
BORAX
BORON OXIDES
CHEMICAL REACTIONS
CHEMICALS
COMBUSTION
CRYSTALS
HIGH TEMPERATURE
MONOCRYSTALS
NITRATES
PHASE DIAGRAMS
PREPARATION
SODIUM COMPOUNDS
SOLID SOLUTIONS
SOLUTIONS
TENSILE PROPERTIES
THORIUM OXIDES
URANIUM DIOXIDE
URANIUM OXIDES
WATER
X RADIATION
ZIRCONIUM OXIDES