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Title: Method for the production of ultrafine particles by electrohydrodynamic micromixing

Patent ·
OSTI ID:873882
 [1];  [1];  [2]
  1. Knoxville, TN
  2. Oak Ridge, TN
+ Show Author Affiliations

The present invention relates to a method for the rapid production of homogeneous, ultrafine inorganic material via liquid-phase reactions. The method of the present invention employs electrohydrodynamic flows in the vicinity of an electrified injector tube placed inside another tube to induce efficient turbulent mixing of two fluids containing reactive species. The rapid micromixing allows liquid-phase reactions to be conducted uniformly at high rates. This approach allows continuous production of non-agglomerated, monopispersed, submicron-sized, sphere-like powders.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
DOE Contract Number:
AC05-96OR22464
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
Patent Number(s):
US 6265025
OSTI ID:
873882
Country of Publication:
United States
Language:
English

References (7)

Preparation and properties of uniform size colloids journal April 1993
Mixing with an Electrostatic Field journal February 1962
Pumping, spraying, and mixing of fluids by electric fields journal June 1998
Electrohydrodynamic mixing and instability induced by co-linear fields and conductivity gradients journal January 1977
Synthesis and formation mechanism of submicrometre spherical cordierite powders by ultrasonic spray pyrolysis journal January 1997
Dielectrophoretic Process for Liquid-Liquid Mixing journal May 1966
Sol−Gel Synthesis and Catalytic Properties of Sulfated Zirconia Catalysts journal January 1996

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method
production
ultrafine
particles
electrohydrodynamic
micromixing
relates
rapid
homogeneous
inorganic
material
via
liquid-phase
reactions
employs
flows
vicinity
electrified
injector
tube
placed
inside
induce
efficient
turbulent
mixing
fluids
containing
reactive
species
allows
conducted
uniformly
rates
approach
continuous
non-agglomerated
monopispersed
submicron-sized
sphere-like
powders
ultrafine particles
fine particles
organic material
placed inside
phase reaction
continuous production
reactive species
rapid production
turbulent mixing
phase reactions
fine particle
active species
approach allows
containing reactive
material via
tube placed
ultrafine particle
inorganic material
fluids containing
allows liquid
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