Supported inorganic membranes
Abstract
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.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 871655
- Patent Number(s):
- 5772735
- Assignee:
- University of New Mexico (Albuquerque, NM); Sandia Natl Laboratories (Albuquerque, NM)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
- DOE Contract Number:
- AC04-76
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- supported; inorganic; membranes; capable; molecular; sieving; methods; production; provided; subject; exhibit; flux; selectivity; substantially; defect; free; 100; nm; thick; pores; average; critical; pore; radius; ang; narrow; size; distribution; prepared; coating; porous; substrate; polymeric; sol; preferably; conditions; relative; pressure; liquid; constituents; coated; dried; calcined; produce; membrane; derivatizing; surface; metal; alkoxides; variety; applications; separation; gaseous; streams; catalysts; catalyst; supports; defect free; subject membranes; catalyst support; metal alkoxide; gaseous stream; size distribution; pore size; porous substrate; coated substrate; supported inorganic; molecular sieving; metal alkoxides; supported membrane; catalyst supports; membranes capable; inorganic membranes; gaseous streams; membranes exhibit; organic membrane; nm thick; substantially defect; /95/96/210/264/501/
Citation Formats
Sehgal, Rakesh, and Brinker, Charles Jeffrey. Supported inorganic membranes. United States: N. p., 1998.
Web.
Sehgal, Rakesh, & Brinker, Charles Jeffrey. Supported inorganic membranes. United States.
Sehgal, Rakesh, and Brinker, Charles Jeffrey. Thu .
"Supported inorganic membranes". United States. https://www.osti.gov/servlets/purl/871655.
@article{osti_871655,
title = {Supported inorganic membranes},
author = {Sehgal, Rakesh and Brinker, Charles Jeffrey},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}
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