Daniel J Baugh

US Patent:

40039803, Jan 18, 1977

Filed:

May 21, 1975

Appl. No.:

5/579495

Inventors:

George W. Watt - Austin TX
Daniel W. Baugh - Baton Rouge LA

Assignee:

Exxon Nuclear Company, Inc. - Bellevue WA

International Classification:

C01G 4302

US Classification:

423261

Abstract:

An actinide dioxide, e. g. uranium dioxide, is prepared by reacting an actinide nitrate or hydrate or tetrahydrofuranate thereof, e. g. uranyl nitrate, a hydrate of uranyl nitrate or a tetrahydrofuranate of uranyl nitrate with an alkali or alkaline earth metal adduct of a monocyclic or polycyclic hydrocarbon in the presence of an inert organic solvent. Typically, the starting material may be uranyl nitrate dihydrate or uranyl nitrate ditetrahydrofuranate (the latter material is a novel composition of matter) with a reactant such as the sodium adduct of naphthalene in the presence of a solvent such as tetrahydrofuran. The resultant uranium dioxide may be further purified by heating it in the presence of hydrogen.

US Patent:

41220951, Oct 24, 1978

Filed:

Oct 19, 1976

Appl. No.:

5/733875

Inventors:

George W. Watt - Austin TX
Daniel W. Baugh - Baton Rouge LA

Assignee:

Exxon Nuclear Company, Inc. - Bellevue WA

International Classification:

C07D30708

US Classification:

26034611

Abstract:

An actinide dioxide, e. g. uranium dioxide, is prepared by reacting an actinide nitrate or hydrate or tetrahydrofuranate thereof, e. g. uranyl nitrate, a hydrate of uranyl nitrate or a tetrahydrofuranate of uranyl nitrate with an alkali or alkaline earth metal adduct of a monocyclic or polycyclic hydrocarbon in the presence of an inert organic solvent. Typically, the starting material may be uranyl nitrate dihydrate or uranyl nitrate ditetrahydrofuranate (the latter material is a novel composition of matter) with a reactant such as the sodium adduct of naphthalene in the presence of a solvent such as tetrahydrofuran. The resultant uranium dioxide may be further purified by heating it in the presence of hydrogen.

US Patent:

40124894, Mar 15, 1977

Filed:

May 21, 1975

Appl. No.:

5/579494

Inventors:

George W. Watt - Austin TX
Daniel W. Baugh - Baton Rouge LA

Assignee:

Exxon Nuclear Company, Inc. - Bellevue WA

International Classification:

C01G 4302

US Classification:

423261

Abstract:

An actinide dioxide, e. g. , uranium dioxide, plutonium dioxide, neptunium dioxide, etc. , is prepared by reacting the actinide nitrate hexahydrate with sodium dithionite as a first step; the reaction product from this first step is a novel composition of matter comprising the actinide sulfite tetrahydrate. The reaction product resulting from this first step is then converted to the actinide dioxide by heating it in the absence of an oxygen-containing atmosphere (e. g. , nitrogen) to a temperature of about 500. degree. to about 950. degree. C. for about 15 to about 135 minutes. If the reaction product resulting from the first step is, prior to carrying out the second heating step, exposed to an oxygen-containing atmosphere such as air, the resultant product is a novel composition of matter comprising the actinide oxysulfite tetrahydrate which can also be readily converted to the actinide dioxide by heating it in the absence of an oxygen-containing atmosphere (e. g. , nitrogen) at a temperature of about 400. degree. to about 900. degree. C.

US Patent:

42117577, Jul 8, 1980

Filed:

Sep 6, 1977

Appl. No.:

5/830751

Inventors:

George W. Watt - Austin TX
Daniel W. Baugh - Baton Rouge LA

Assignee:

Exxon Nuclear Company, Inc. - Bellevue WA

International Classification:

C01G 5600
C01G 4300

US Classification:

423251

Abstract:

An actinide dioxide, e. g. uranium dioxide, plutonium dioxide, neptunium dioxide, etc. , is prepared by reacting the actinide nitrate hexahydrate with sodium dithionite as a first step; the reaction product from this first step is a novel composition of matter comprising the actinide sulfite tetrahydrate. The reaction product resulting from this first step is then converted to the actinide dioxide by heating it in the absence of an oxygen-containing atmosphere (e. g. nitrogen) to a temperature of about 500. degree. to about 950. degree. C. for about 15 to about 135 minutes. If the reaction product resulting from the first step is, prior to carrying out the second heating step, exposed to an oxygen-containing atmosphere such as air, the resultant product is a novel composition of matter comprising the actinide oxysulfite tetrahydrate which can also be readily converted to the actinide dioxide by heating it in the absence of an oxygen-containing atmosphere (e. g. nitrogen) at a temperature of about 400. degree. to about 900. degree. C.