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

Patent · 31 December 1977

OSTI ID:863008

Quinby, Thomas C ^[1]

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1. Kingston, TN

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.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4072501
• OSTI ID: 863008
• Country of Publication: United States
• Language: English

Related Subjects

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