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Supported inorganic membranes

Patent ·
OSTI ID:871655
 [1];  [1]
  1. Albuquerque, NM
+ Show Author Affiliations

Supported inorganic membranes capable of molecular sieving, and methods for their production, are provided. The subject membranes exhibit high flux and high selectivity. The subject membranes are substantially defect free and less than about 100 nm thick. The pores of the subject membranes have an average critical pore radius of less than about 5 .ANG., and have a narrow pore size distribution. The subject membranes are prepared by coating a porous substrate with a polymeric sol, preferably under conditions of low relative pressure of the liquid constituents of the sol. The coated substrate is dried and calcined to produce the subject supported membrane. Also provided are methods of derivatizing the surface of supported inorganic membranes with metal alkoxides. The subject membranes find use in a variety of applications, such as the separation of constituents of gaseous streams, as catalysts and catalyst supports, and the like.

Research Organization:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
Assignee:
University of New Mexico (Albuquerque, NM); Sandia Natl Laboratories (Albuquerque, NM)
Patent Number(s):
US 5772735
OSTI ID:
871655
Country of Publication:
United States
Language:
English

References (6)

Polymer approach to supported silica membranes: Code: E5 journal January 1994
Nature and properties of pure and nb-doped Ti02 ceramic membranes affecting the photocatalytic degradation of 3-chlorosalicylic acid as a model of halogenated organic compounds journal March 1992
Interaction of Titanium Isopropoxide with Surface Hydroxyls on Silica journal February 1994
A kinetic study of the photocatalytic degradation of 3-chlorosalicylic acid over TiO2 membranes supported on glass journal January 1991
Sol-gel strategies for controlled porosity inorganic materials journal September 1994
“Ultramicroporous” silica-based supported inorganic membranes journal March 1993

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Related Subjects

/95/96/210/264/501/
100
alkoxides
ang
applications
average
calcined
capable
catalyst
catalyst support
catalyst supports
catalysts
coated
coated substrate
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conditions
constituents
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defect free
derivatizing
distribution
dried
exhibit
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free
gaseous
gaseous stream
gaseous streams
inorganic
inorganic membranes
liquid
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membranes
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membranes exhibit
metal
metal alkoxide
metal alkoxides
methods
molecular
molecular sieving
narrow
nm
nm thick
organic membrane
polymeric
pore
pore size
pores
porous
porous substrate
preferably
prepared
pressure
produce
production
provided
radius
relative
selectivity
separation
sieving
size
size distribution
sol
streams
subject
subject membranes
substantially
substantially defect
substrate
supported
supported inorganic
supported membrane
supports
surface
thick
variety