Patent US5312792A successfully refreshed from Google Patents.
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 04:46
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.
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