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

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 Laboratory (ORNL), Oak Ridge, TN

OSTI Identifier:: 863008

Patent Number(s):: 4072501

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

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/

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                    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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