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Title: SEPARATION OF PROTACTINIUM FROM CONTAMINANTS

Abstract

The separation of protactinium by volatilization method is described. According to the invention, neutron irradiated finely divided thorium is reacted with aluminum trichloride or a mixture of aluminum trichloride and chlorine gas at a temperature of preferably between about 200 and 400 deg C. Following the chlorinating step the protactinium chloride along with aluminum chloride is selectively distilled from the mixture at a temperature of approximately 100 deg C. The protactinium chloride may be recovered from the mixture by treatment with sodium hydroxide, which converts the aluminum chloride to a soluble salt and forms insoluble protactinium hydroxide.

Inventors:
;
Issue Date:
OSTI Identifier:
4236060
Patent Number(s):
2893825
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
NSA Number:
NSA-14-002482
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ALUMINUM CHLORIDES; CHEMICAL REACTIONS; CHLORINE; CONVERSION; DISTILLATION; EVAPORATION; GASES; IMPURITIES; IRRADIATION; NEUTRONS; PROTACTINIUM; PROTACTINIUM CHLORIDES; PROTACTINIUM HYDROXIDES; RECOVERY; SEPARATION PROCESSES; SODIUM HYDROXIDES; TEMPERATURE; THORIUM

Citation Formats

Malm, J G, and Fried, S. SEPARATION OF PROTACTINIUM FROM CONTAMINANTS. United States: N. p., 1959. Web.
Malm, J G, & Fried, S. SEPARATION OF PROTACTINIUM FROM CONTAMINANTS. United States.
Malm, J G, and Fried, S. Wed . "SEPARATION OF PROTACTINIUM FROM CONTAMINANTS". United States.
@article{osti_4236060,
title = {SEPARATION OF PROTACTINIUM FROM CONTAMINANTS},
author = {Malm, J G and Fried, S},
abstractNote = {The separation of protactinium by volatilization method is described. According to the invention, neutron irradiated finely divided thorium is reacted with aluminum trichloride or a mixture of aluminum trichloride and chlorine gas at a temperature of preferably between about 200 and 400 deg C. Following the chlorinating step the protactinium chloride along with aluminum chloride is selectively distilled from the mixture at a temperature of approximately 100 deg C. The protactinium chloride may be recovered from the mixture by treatment with sodium hydroxide, which converts the aluminum chloride to a soluble salt and forms insoluble protactinium hydroxide.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {7}
}