US4791079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic membrane for hydrocarbon conversion
Assignee: Air Products and Chemicals Inc
•
Filing: 1986-06-09
•
Granted: 1988-12-13
•
Expires: 2006-06-09
Abstract
Abstract The invention relates to a novel mixed ion and electron conducting catalytic ceramic membrane and to its use in hydrocarbon oxidation and or dehydrogenation processes, the membrane consists of two layers, layer 1 which is an impervious mixed ion and electron conducting ceramic layer and layer 2 which is a porous catalyst-containing ion conducting ceramic layer.
Inventors
- 👤 Edward A. Hazbun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/2475; B01J12/00; B01J12/007; B01J35/00; B01J35/30; B01J35/391; B01J35/395; B01J35/50; B01J35/58; B01J35/59; C; C07; C07C; C07C2/00; C07C2/76; C07C2/82; C07C2/84; C07C5/00; C07C5/42; C07C5/48; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/1231; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
42 words
A ceramic membrane structure comprised of a first layer which is a mixed oxygen ion and electron conducting impervious ceramic layer and a second layer which is associated with said first layer and which is a catalyst-containing porous ion conducting ceramic layer.
Claim 2
Dependent Claim
42 words
A ceramic membrane structure comprised of a first layer which is a mixed oxygen ion and electron conducting impervious ceramic layer and a second layer which is associated with said first layer and which is a catalyst-containing porous ion conducting ceramic layer.
Claim 3
Dependent Claim
49 words
A ceramic membrane structure comprised of first layer which is mixed oxygen ion and electron conducting impervious stabilized zirconia ceramic doped with a Group-VB, VIB or titanium oxide, and a second layer which is associated with said first layer and which is a porous, catalyst-containing, stabilized zirconia ceramic layer.
Claim 4
Dependent Claim
49 words
A ceramic membrane structure comprised of first layer which is mixed oxygen ion and electron conducting impervious stabilized zirconia ceramic doped with a Group-VB, VIB or titanium oxide, and a second layer which is associated with said first layer and which is a porous, catalyst-containing, stabilized zirconia ceramic layer.
Claim 5
Dependent Claim
14 words
The structure of claim 1 wherein said catalyst-containing layer contains an oxidative conversion catalyst.
Claim 6
Dependent Claim
14 words
The structure of claim 3 wherein the catalyst is sodium promoted manganese oxide complex.
Claim 7
Dependent Claim
14 words
The structure of claim 3 wherein the catalyst is lithium promoted magnesium oxide complex.
Claim 8
Dependent Claim
11 words
The structure of claim 1 wherein said membrane structure is tubular.
Claim 9
Dependent Claim
13 words
The structure of claim 1 wherein said membrane structure is a cellular structure.
Claim 10
Dependent Claim
58 words
A ceramic membrane structure comprised of a first layer which is a mixed oxygen ion and electron conducting impervious ceramic layer comprised of about 77-88 mole % zirconia, about 10-13 mole % yttria, and about 1-10 mole % titania, and a second layer which is associated with said first layer and which is a catalyst-containing porous ceramic layer.
Claim 11
Dependent Claim
58 words
A ceramic membrane structure comprised of a first layer which is a mixed oxygen ion and electron conducting impervious ceramic layer comprised of about 77-88 mole % zirconia, about 10-13 mole % yttria, and about 1-10 mole % titania, and a second layer which is associated with said first layer and which is a catalyst-containing porous ceramic layer.
Claim 12
Dependent Claim
58 words
A ceramic membrane structure comprised of a first layer which is a mixed oxygen ion and electron conducting impervious ceramic layer and a second layer which is associated with said first layer and which is a catalyst-containing porous ceramic layer comprised of zirconia stabilized with about 8 to 15 mole % calcia, yttria, scandia, magnesia and/or mixtures thereof.
Claim 13
Dependent Claim
58 words
A ceramic membrane structure comprised of a first layer which is a mixed oxygen ion and electron conducting impervious ceramic layer and a second layer which is associated with said first layer and which is a catalyst-containing porous ceramic layer comprised of zirconia stabilized with about 8 to 15 mole % calcia, yttria, scandia, magnesia and/or mixtures thereof.
References Cited (Backward Citations)
US3362783A
Cited
US3951860A
Cited
US3926702A
Cited
US3873469A
Cited
US3894965A
Cited
US4426319A
Cited
US4650781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |