US4427790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activation of zeolites
Assignee: Mobil Oil AS
•
Filing: 1982-03-08
•
Granted: 1984-01-24
•
Expires: 2002-03-08
Abstract
Abstract A method for enhancing the activity of a zeolite, including a zeolite having a silica-to-alumina ratio greater than 100, is disclosed which involves reacting the zeolite with a compound having a complex fluoroanion.
Inventors
- 👤 Joseph N. Miale
- 👤 Clarence D. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:52
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/22; B01J37/26; B01J29/00; B01J29/04; B01J29/06; B01J29/40; B01J31/00; B01J31/16; B01J31/1616; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/65; B01J29/70
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
135 words
A method for enhancing the activity of a porous crystalline zeolite having a silica-to-alumina mole ratio greater than about 100 which comprises reacting said zeolite with a compound having the formula: L.sub.(n-m) [MF.sub.n ].sub.e wherein L is an organic or inorganic ionic moiety, [MF n ] is a fluoraonion moiety comprising the element M, M is an element selected from the group consisting of elements from Groups VB, VIB, VIIB, VIII, IIIA, IVA and VA of the Periodic Table of the Elements and Rare Earth elements, n is the coordination number of M, m is the valence of M and e is the charge associated with L, said reaction being conducted at a temperature of from about -70° C. to about 80° C. and a pressure of from about -0.8 psig to about 50 psig.
Claim 2
Independent Claim
135 words
A method for enhancing the activity of a porous crystalline zeolite having a silica-to-alumina mole ratio greater than about 100 which comprises reacting said zeolite with a compound having the formula: L.sub.(n-m) [MF.sub.n ].sub.e wherein L is an organic or inorganic ionic moiety, [MF n ] is a fluoraonion moiety comprising the element M, M is an element selected from the group consisting of elements from Groups VB, VIB, VIIB, VIII, IIIA, IVA and VA of the Periodic Table of the Elements and Rare Earth elements, n is the coordination number of M, m is the valence of M and e is the charge associated with L, said reaction being conducted at a temperature of from about -70° C. to about 80° C. and a pressure of from about -0.8 psig to about 50 psig.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said zeolite has a silica-to-alumina mole ratio greater than about 500.
Claim 4
Dependent Claim
18 words
The method of claim 1 which comprises the additional step of hydrolyzing said zeolite reacted with said compound.
Claim 5
Dependent Claim
20 words
The method of claim 3 which comprises the additional step of contacting said hydrolyzed zeolite with an ammonium salt solution.
Claim 6
Dependent Claim
30 words
The method of claim 4 which comprises the additional step of calcining said ammonium salt solution contacted zeolite at a temperature of from about 200° C. to about 600° C.
Claim 7
Dependent Claim
13 words
The method of claim 4 wherein said ammonium salt solution is ammonium nitrate.
Claim 8
Dependent Claim
17 words
The method of claim 1 wherein said zeolite is ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 or ZSM-48.
Claim 9
Dependent Claim
12 words
The method of claim 3 wherein said zeolite is ZSM-5 or ZSM-11.
Claim 10
Dependent Claim
21 words
A zeolite composition having enhanced activity prepared by the method of claim 1, 2, 3, 4, 5, 6, 7 or 8.
Claim 11
Independent Claim
144 words
A method for enhancing the activity of a porous crystalline zeolite having a silica-to-alumina mole ratio greater than about 100 which comprises compositing said zeolite with matrix material comprising alumina, and reacting said composite with a compound having the formula: L.sub.(n-m) [MF.sub.n ].sub.e wherein L is an organic or inorganic ionic moiety, [MF n ] is a fluoroanion moiety comprising the element M, M is an element selected from the group consisting of elements from Groups VB, VIB, VIIB, VIII, IIIA, IVA and VA of the Periodic Table of the Elements and Rare Earth elements, n is the coordination number of M, m is the valence of M and e is the charge associated with L, said reaction being conducted at a temperature of from about -70° C. to about 80° C. and a pressure of from about -0.8 psig to about 50 psig.
Claim 12
Independent Claim
144 words
A method for enhancing the activity of a porous crystalline zeolite having a silica-to-alumina mole ratio greater than about 100 which comprises compositing said zeolite with matrix material comprising alumina, and reacting said composite with a compound having the formula: L.sub.(n-m) [MF.sub.n ].sub.e wherein L is an organic or inorganic ionic moiety, [MF n ] is a fluoroanion moiety comprising the element M, M is an element selected from the group consisting of elements from Groups VB, VIB, VIIB, VIII, IIIA, IVA and VA of the Periodic Table of the Elements and Rare Earth elements, n is the coordination number of M, m is the valence of M and e is the charge associated with L, said reaction being conducted at a temperature of from about -70° C. to about 80° C. and a pressure of from about -0.8 psig to about 50 psig.
Claim 13
Dependent Claim
17 words
The method of claim 10 wherein said zeolite has a silica-to-alumina mole ratio greater than about 500.
Claim 14
Dependent Claim
19 words
The method of claim 10 which comprises the additional step of contacting said composite with an ammonium salt solution.
Claim 15
Dependent Claim
30 words
The method of claim 12 which comprises the additional step of calcining said ammonium salt solution contacted composite at a temperature of from about 200° C. to about 600° C.
Claim 16
Dependent Claim
20 words
The method of claim 10 wherein said zeolite has the structure of ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-38 or ZSM-48.
Claim 17
Dependent Claim
11 words
The method of claim 10 wherein said composite is an extrudate.
Claim 18
Dependent Claim
10 words
A zeolite composition prepared by the method of claim 10.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |