Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures

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Title: Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures

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Abstract

Metal powders, metal oxide powders, and mixtures thereof of controlled particle size are provided by reacting an aqueous solution containing dissolved metal values with excess urea. Upon heating, urea reacts with water from the solution leaving a molten urea solution containing the metal values. The molten urea solution is heated to above about 180.degree. C. whereupon metal values precipitate homogeneously as a powder. The powder is reduced to metal or calcined to form oxide particles. One or more metal oxides in a mixture can be selectively reduced to produce metal particles or a mixture of metal and metal oxide particles.

Inventors:

Quinby, Thomas C ^[1]

Kingston, TN

Issue Date:: 1978-01-01

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 863008

Patent Number(s):: 4072501

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS

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G - PHYSICS G21 - NUCLEAR PHYSICS G21F - PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT
G21F9/14 - by incineration
G21F9/302 - {in an inorganic matrix}

C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C22C1/1026 - {starting from a solution or a suspension of

B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B22F9/22 - using gaseous reductors

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Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; producing; homogeneous; mixed; metal; oxides; metal-metal; oxide; mixtures; powders; controlled; particle; size; provided; reacting; aqueous; solution; containing; dissolved; values; excess; urea; heating; reacts; water; leaving; molten; heated; 180; degree; whereupon; precipitate; homogeneously; powder; reduced; calcined; form; particles; mixture; selectively; produce; metal powders; metal particle; containing dissolved; metal values; metal particles; mixed metal; solution containing; metal oxide; aqueous solution; particle size; metal oxides; oxide particles; oxide powder; metal powder; oxide powders; controlled particle; oxide mixtures; dissolved metal; oxide particle; oxide mixture; produce metal; producing homogeneous; /75/423/976/

Citation Formats


                    Quinby, Thomas C. Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures.  United States: N. p., 1978. 
        Web.

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                    Quinby, Thomas C. Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures.  United States.

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                    Quinby, Thomas C. Sun .  
        "Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures".  United States.  https://www.osti.gov/servlets/purl/863008.

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@article{osti_863008,

  title        = {Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures},

  author       = {Quinby, Thomas C},

  abstractNote = {Metal powders, metal oxide powders, and mixtures thereof of controlled particle size are provided by reacting an aqueous solution containing dissolved metal values with excess urea. Upon heating, urea reacts with water from the solution leaving a molten urea solution containing the metal values. The molten urea solution is heated to above about 180.degree. C. whereupon metal values precipitate homogeneously as a powder. The powder is reduced to metal or calcined to form oxide particles. One or more metal oxides in a mixture can be selectively reduced to produce metal particles or a mixture of metal and metal oxide particles.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1978},

  month        = {1}

}

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