Inorganic dual-layer microporous supported membranes

Brinker, C Jeffrey; Tsai, Chung-Yi; Lu, Yungfeng

Title: Inorganic dual-layer microporous supported membranes

Patent · Wed Jan 01 00:00:00 EST 2003

OSTI ID:875122

Brinker, C Jeffrey ^[1]; Tsai, Chung-Yi ^[2]; Lu, Yungfeng ^[3]

14 Eagle Nest Dr. NE., Albuquerque, NM 87122
6 Mount Vernon Dr., Apt. C, Vernon, CT 06066
1055 N. Capital Ave., #20, San Jose, CA 95133

The present invention provides for a dual-layer inorganic microporous membrane capable of molecular sieving, and methods for production of the membranes. The inorganic microporous supported membrane includes a porous substrate which supports a first inorganic porous membrane having an average pore size of less than about 25 .ANG. and a second inorganic porous membrane coating the first inorganic membrane having an average pore size of less than about 6 .ANG.. The dual-layered membrane is produced by contacting the porous substrate with a surfactant-template polymeric sol, resulting in a surfactant sol coated membrane support. The surfactant sol coated membrane support is dried, producing a surfactant-templated polymer-coated substrate which is calcined to produce an intermediate layer surfactant-templated membrane. The intermediate layer surfactant-templated membrane is then contacted with a second polymeric sol producing a polymeric sol coated substrate which is dried producing an inorganic polymeric coated substrate. The inorganic polymeric coated substrate is then calcined producing an inorganic dual-layered microporous supported membrane in accordance with the present invention.

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Research Organization:: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)

DOE Contract Number:: AC04-94AL85000

Assignee:: Brinker; C. Jeffrey (14 Eagle Nest Dr. NE., Albuquerque, NM 87122); Tsai; Chung-Yi (6 Mount Vernon Dr., Apt. C, Vernon, CT 06066); Lu; Yungfeng (1055 N. Capital Ave., #20, San Jose, CA 95133)

Patent Number(s):: US 6536604

Application Number:: 09/602579

OSTI ID:: 875122

Country of Publication:: United States

Language:: English

References (18)

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inorganic
dual-layer
microporous
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provides
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capable
molecular
sieving
methods
production
porous
substrate
supports
average
pore
size
25
ang
coating
dual-layered
produced
contacting
surfactant-template
polymeric
sol
resulting
surfactant
coated
support
dried
producing
surfactant-templated
polymer-coated
calcined
produce
intermediate
layer
contacted
pore size
coated substrate
microporous membrane
molecular sieving
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Title: Inorganic dual-layer microporous supported membranes

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References (18)

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