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

Patent · Sun Jan 01 00:00:00 EST 1978

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 (United States)
• 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

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/