US5202295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intercalated clay having large interlayer spacing
Assignee: Honeywell UOP LLC
•
Filing: 1991-10-18
•
Granted: 1993-04-13
•
Expires: 2011-10-18
Abstract
Abstract Hydrothermally stable intercalated clays having interlayer (gallery) spacings greater than 21 angstroms are provided by pillars comprising a rare earth metal. The pillars preferably also contain a metal such as aluminum. Other pillaring metal/rare earth combinations and differing preparation conditions, such as pH, result in different interlayer spacings. Interlayer spacings of up to 50 angstroms may be produced.
Inventors
- 👤 John R. McCauley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/049; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
26 words
An intercalated smectite clay having pillars which comprise at least one rare earth metal, said clay characterized by an interlayer spacing greater than about 21 angstroms.
Claim 2
Dependent Claim
26 words
An intercalated smectite clay having pillars which comprise at least one rare earth metal, said clay characterized by an interlayer spacing greater than about 21 angstroms.
Claim 3
Dependent Claim
22 words
The clay of claim 1 wherein the pillars comprise an additional metal chosen from the group consisting of aluminum, zirconium, and chromium.
Claim 4
Dependent Claim
16 words
The clay of claim 1 wherein the clay has an interlayer spacing of about 22-40 angstroms.
Claim 5
Dependent Claim
35 words
An intercalated clay having pillars which comprise a rare earth metal and a metal chosen from the group consisting of aluminum, chromium and zirconium and also characterized by an interlayer spacing of about 21-50 angstroms.
Claim 6
Dependent Claim
35 words
An intercalated clay having pillars which comprise a rare earth metal and a metal chosen from the group consisting of aluminum, chromium and zirconium and also characterized by an interlayer spacing of about 21-50 angstroms.
Claim 7
Dependent Claim
12 words
The clay of claim 4 wherein the pillars contain cerium or lanthanium.
Claim 8
Dependent Claim
12 words
The clay of claim 4 wherein the pillars comprise aluminum and cerium.
Claim 9
Dependent Claim
12 words
The clay of claim 6 wherein said clay is a smectite clay.
Claim 10
Dependent Claim
30 words
The clay of claim 4 wherein the clay contains at least one metal chosen from the group consisting of molybdenum, tungsten, platinum, palladium, nickel, cobalt, germanium, tin, gallium and chromium.
Claim 11
Dependent Claim
17 words
The clay of claim 4 wherein the clay is montmorillonite, bentonite, hectorite, beidellite, saponite, nontronite or sauconite.
Claim 12
Dependent Claim
10 words
The clay of claim 4 wherein the clay is fluorhectorite.
Claim 13
Dependent Claim
44 words
A composition comprising a zeolite and an intercalated clay having an interlayer spacing greater than about 21 angstroms, with the clay having pillars which comprise a rare earth metal and a pillaring metal chosen from the group consisting of aluminum, zirconium, chromium and iron.
Claim 14
Dependent Claim
44 words
A composition comprising a zeolite and an intercalated clay having an interlayer spacing greater than about 21 angstroms, with the clay having pillars which comprise a rare earth metal and a pillaring metal chosen from the group consisting of aluminum, zirconium, chromium and iron.
Claim 15
Dependent Claim
12 words
The composition of claim 11 wherein the rare earth metal is cerium.
Claim 16
Dependent Claim
12 words
The composition of claim 11 wherein the rare earth metal is lanthanum.
Claim 17
Dependent Claim
15 words
The composition of claim 11 wherein the interlayer spacing is less than about 40 angstroms.
References Cited (Backward Citations)
US4176090A
Cited
US4216188A
Cited
US4238364A
Cited
US4248739A
Cited
US4271043A
Cited
US4436832A
Cited
US4452910A
Cited
US4510257A
Cited
US4579832A
Cited
US4753909A
Cited
US5059568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-12 | 1996-10-12 | 1997-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-12 | 2000-10-12 | 2001-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-12 | 2004-10-12 | 2005-04-13 | $7700.00 | Window Closed / Lapsed |