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US5312792A
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Catalytic compositions
Assignee: WR Grace and Co Conn
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Filing: 1992-07-20
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Granted: 1994-05-17
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Expires: 2012-07-20
Abstract
Abstract Crystalline aluminosilicate zeolite Y which contains phosphorus and its use in the preparation of hydrocarbon conversion catalysts.
Inventors
- 👤 Terry G. Roberie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:34
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/575; A61K31/59; A61K31/70; A61K31/7028; A61K31/7034; A61K31/704
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
A method for preparing phosphorus-containing ultrastable Y-zeolite which comprises: (a) ion-exchanging and washing sodium Y zeolite having a unit cell dimension of about 24.53 to 24.72 Å with an ammonium salt solution and water to obtain a Y-zeolite which contains 1 to 5 weight percent Na 2 O; (b) combining the washed Y-zeolite of step (a) with an aqueous solution of a phosphorus compound selected from the group consisting of H 3 PO 4 , NH 4 H 2 PO 4 , (NH 4 ) 2 HPO 4 , and Na H 2 PO 4 to obtain a Y-zeolite that contains about 0.1 to 5 weight percent P 2 O 5 ; (c) heating the phosphorus-containing Y-zeolite of step (b) in the presence of steam to obtain a phosphorus-containing ultrastable Y-zeolite having au nit cell dimension of about 24.45 to 24.60 Å; and (d) washing the phosphorus-containing ultrastable Y-zeolite of step (c) to remove sodium ions.
Claim 2
Independent Claim
156 words
A method for preparing phosphorus-containing ultrastable Y-zeolite which comprises: (a) ion-exchanging and washing sodium Y zeolite having a unit cell dimension of about 24.53 to 24.72 Å with an ammonium salt solution and water to obtain a Y-zeolite which contains 1 to 5 weight percent Na 2 O; (b) combining the washed Y-zeolite of step (a) with an aqueous solution of a phosphorus compound selected from the group consisting of H 3 PO 4 , NH 4 H 2 PO 4 , (NH 4 ) 2 HPO 4 , and Na H 2 PO 4 to obtain a Y-zeolite that contains about 0.1 to 5 weight percent P 2 O 5 ; (c) heating the phosphorus-containing Y-zeolite of step (b) in the presence of steam to obtain a phosphorus-containing ultrastable Y-zeolite having au nit cell dimension of about 24.45 to 24.60 Å; and (d) washing the phosphorus-containing ultrastable Y-zeolite of step (c) to remove sodium ions.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the Y-zeolite of step (b) is heated at a temperature of 500° to 750° C. in the presence of 10 to 100 percent steam.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the phosphorus-containing ultrastable Y-zeolite of step (d) contains 0.7 to 2.0 weight percent P 2 O 5 .
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein the product of step (b) is spray dried.
Claim 6
Dependent Claim
15 words
The method of claim 1 wherein the phosphorus compound is H 3 PO 4 .
Claim 7
Dependent Claim
24 words
The method of claim 1 wherein the phosphorus-containing ultrastable Y-zeolite obtained in step (c) has a unit cell dimension of 24.52 to 24.58 Å.
Claim 8
Dependent Claim
46 words
The method of claim 1 wherein the phosphorus-containing ultrastable Y-zeolite obtained in step (c) is combined with inorganic oxide matrix components selected from the group consisting of clay, silica, alumina, silica/alumina sol and mixtures thereof, spray dried and washed to obtain a fluid catalytic cracking catalyst.
Claim 9
Dependent Claim
11 words
The phosphorus-containing ultrastable Y-zeolite prepared by the method of claim 1.
References Cited (Backward Citations)
US3354096A
Cited
SU479485A1
Cited
US4115424A
Cited
US4259212A
Cited
US4340465A
Cited
US4357265A
Cited
US4483764A
Cited
US4431517A
Cited
US4454241A
Cited
EP0095364A2
Cited
US4498975A
Cited
US4465780A
Cited
US4504382A
Cited
US4567152A
Cited
US4584091A
Cited
EP0252761A2
Cited
US4839319A
Cited
US4970183A
Cited
US4765884A
Cited
US5110776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-16 | 1997-11-15 | 1998-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-16 | 2001-11-15 | 2002-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-16 | 2005-11-15 | 2006-05-17 | $7700.00 | Window Closed / Lapsed |