US3872029A
Expired / Lapsed
US
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Catalyst for the conversion of hydrocarbon, a method for the preparation of the catalyst
Assignee: Eneos Corp
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Filing: 1972-07-07
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Granted: 1975-03-18
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Expires: 1992-07-07
Abstract
Abstract The present invention discloses (1) a method for the preparation of a catalyst for the conversion of hydrocarbon which comprises the steps: Preparing silica-alumina by reacting an aluminum compound and a silicon compound in an aqueous solution while maintaining the pH at least at 10, adding to the reaction product an acid to adjust the pH to 1-7, followed by, if necessary, addition of an aluminum compound and/or silicon compound and then raising pH of the resulting acid solution to 5-9 by addition of an alkali; blending said silica-alumina and crystalline aluminosilicate having a silica and alumina molar ratio of at least 2.5 : 1 and a micro-pore diameter of 5-15 A so that the crystalline alumino-silicate content is from 5 to 60% by weight on the basis of the finished catalyst; and carrying thereon at least one hydrogenation-active metal; said blending of crystalline aluminosilicate being conducted at any step before drying for dehydration of the silica-alumina, and at least 60% of an ionexhangeable alkali metal of said crystalline alumino-silicate being replaced with hydrogen and/or at least one polyvalent metal before and/or after said blending, (2) a catalyst for the conversion of hydrocarbon prepared by said method and (3) ''''a process for the conversion of hydrocarbon fraction'''' using the catalyst.
Inventors
- 👤 Shinji Takase
- 👤 Takahiko Yamazi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:39
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G49/00; C10G49/02; C10G49/08
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
169 words
A PROCESS FOR PREPARING A CATALYST FOR THR CONVERSION OF HYDROCARBON WHICH COMPRISES PREPAREING SLICA-ALUMINA BE REACTING A WATER-SOLUBLE ALUMINUM SALT AND A WATER-SOLUBLE SILICON SALT IN AN AQUEOUS SOLUTION WHILE MAINTINING THE PH AT LEAST AT 10, SAID SALTS BEING WATER-SOLUBLE AT SAID PH, ADDING TO THE REACTION SOLUTION AN ACID TO ADJUST THE PH TO FROM ABOUT 1 TO BELOW 5 AND INCREASING THE PH OF THE RESULTING ACID SOLUTION TO 5-9 BY ADD8ITION OF AN ALKALI; BLENDING SAID SILICAALUMINA AND A CRYSTALINE ALUMINO-SILICATE ZEOLITE HAVING A SILICA AND ALUMINA MOLAR RATIO OF AT LEAST 2.5:1 AND A MICROPORE DIAMETER OF 5-15SO THAT THE FINISHED CATALYST CONTAINS 5-60% BY WEIGHTH OF SAID CRYSTALLINE ALUMINO-SILICATE; AND CARRYING AT LEAST ONE HYDROGENATION-ACTIVE METAL THEREON; SAID BLENDING OF CRYSTALLINE ALUMINO-SILICATE BEING CONDUCTED AT ANY STEP BEFORE DRYING FOR DEHYDRATION OF SAID SILICATE-ALUMINA; AND AT LEAST 60% OF AN ION-EXCHANGEABLE ALKALI METAL OF SAID CRYSTALLINE ALUMINO-SILICATE BEING REPLACING WITH HYDROGEN AND/OR AT LEAST ONE POLYVALENT METAL BEFORE AN/OR AFTER SAID BLENDING.
Claim 2
Dependent Claim
169 words
A PROCESS FOR PREPARING A CATALYST FOR THR CONVERSION OF HYDROCARBON WHICH COMPRISES PREPAREING SLICA-ALUMINA BE REACTING A WATER-SOLUBLE ALUMINUM SALT AND A WATER-SOLUBLE SILICON SALT IN AN AQUEOUS SOLUTION WHILE MAINTINING THE PH AT LEAST AT 10, SAID SALTS BEING WATER-SOLUBLE AT SAID PH, ADDING TO THE REACTION SOLUTION AN ACID TO ADJUST THE PH TO FROM ABOUT 1 TO BELOW 5 AND INCREASING THE PH OF THE RESULTING ACID SOLUTION TO 5-9 BY ADD8ITION OF AN ALKALI; BLENDING SAID SILICAALUMINA AND A CRYSTALINE ALUMINO-SILICATE ZEOLITE HAVING A SILICA AND ALUMINA MOLAR RATIO OF AT LEAST 2.5:1 AND A MICROPORE DIAMETER OF 5-15SO THAT THE FINISHED CATALYST CONTAINS 5-60% BY WEIGHTH OF SAID CRYSTALLINE ALUMINO-SILICATE; AND CARRYING AT LEAST ONE HYDROGENATION-ACTIVE METAL THEREON; SAID BLENDING OF CRYSTALLINE ALUMINO-SILICATE BEING CONDUCTED AT ANY STEP BEFORE DRYING FOR DEHYDRATION OF SAID SILICATE-ALUMINA; AND AT LEAST 60% OF AN ION-EXCHANGEABLE ALKALI METAL OF SAID CRYSTALLINE ALUMINO-SILICATE BEING REPLACING WITH HYDROGEN AND/OR AT LEAST ONE POLYVALENT METAL BEFORE AN/OR AFTER SAID BLENDING.
Claim 3
Dependent Claim
28 words
A process according to claim 1 wherein the silica-alumina contains 5-95% by weight of silica, and preferably 30-90% by weight of silica and 70-10% by weight of alumina.
Claim 4
Dependent Claim
26 words
A process according to claim 1 wherein the silica-alumina contains 0.3-15% by weight of combined halogen on the basis of the total weight of the catalyst.
Claim 5
Dependent Claim
56 words
A process according to claim 1 wherein the source of said silicon salt is a member selected from the group consisting of alkali metal silicates, water glass and silica sol and the source of said aluminum salt is a member selected from the group consisting of aluminum sulfate, aluminum nitrate, aluminum chloride, alum, and sodium aluminate.
Claim 6
Dependent Claim
48 words
A process according to claim 1 wherein ammonia, organic base or inorganic base other than ammonia is added to an aqueous solution of said aluminum salt and/or an aqueous solution of said silicon salt in order to maintain the pH of the aqueous solution at least at 10.
Claim 7
Dependent Claim
25 words
A process according to claim 1 wherein the reaction between said aluminum salt and silicon salt is conducted at a temperature from -10* to 90*C.
Claim 8
Dependent Claim
33 words
A process according to claim 1 wherein the acidified mixture is aged at a temperature from -10* to 90*C. for 0.1-100 hours and, after said addition of alkali, additionally aged for 0.1-240 hours.
Claim 9
Dependent Claim
30 words
A process according to claim 1 wherein the crystallinE alumino-silicate is a member selected from the group consisting of natural or synthetic mordenite, faujasite and synthetic zeolite X and Y.
Claim 10
Dependent Claim
47 words
A process according to claim 1 wherein at least 60% of an ion-exchangeable alkali metal of the crystalline alumino-silicate is replaced with at least one element selected from the group consisting of hydrogen, metals of Groups IB - VIII in the Periodic Table and rare earth metals.
Claim 11
Dependent Claim
39 words
A process according to claim 1 wherein an ion-exchange treatment is conducted with a solution containing cation such as ammonium ion in order to replace at least 60% of an ion-exchangeable alkali metal of the crystalline alumino-silicate with hydrogen.
Claim 12
Dependent Claim
37 words
A process according to claim 1 wherein the crystalline alumino-silicate is mordenite which is treated with a mineral acid to replace an alkali metal cation thereof with hydrogen and/or to dissolve the aluminum contained in the mordenite.
Claim 13
Dependent Claim
54 words
A process according to claim 1 wherein the hydrogenation-active metal is at least one element selected from the group consisting of metals of Groups VI, VII and VIII in the Periodic Table and the element is blended in an amount of about 0.1 to 40% by weight on the basis of the finished catalyst.
Claim 14
Dependent Claim
38 words
A process according to claim 1 wherein a precious metal selected from the group consisting of platinum and palladium is blended in an amount of about 0.1 to 2.0% by weight on the basis of the finished catalyst.
Claim 15
Dependent Claim
33 words
A process according to claim 1 wherein a hydrogenation-active metal other than precious metal is blended in an amount of about 5.0 to 40.0% by weight on the basis of the finished catalyst.
Claim 16
Dependent Claim
28 words
Process according to claim 1 including the further step of dissolving additional aluminum salt and/or silicon salt in the acidified solution before the step of increasing the pH.
Claim 17
Dependent Claim
168 words
A catalyst for the conversion of hydrocarbon prepared by the process which comprises preparing silica-alumina by reacting a water-soluble aluminum salt and a water-soluble silicon salt in an aqueous solution while maintaining the pH at least at 10, said salts being water-soluble at said pH, adding to the reaction product and acid to adjust the pH from about 1 to below 5 and adding to the aqueous acid solution an alkali to raise the pH to 5-9; blending said silica-alumina and a crystalline alumino-silicate zeolite having a silica and alumina molar ratio of at least 2.5:1 and a micro-pore diameter of 5-15A so that the finished catalyst contains 5-60% by weight of said crystalline alumino-silicate; and carrying thereon at least one hydrogenation-active metal; said blending of crystalline alumino-silicate being conducted at any step before drying for dehydration of said silica-alumina, and at least 60% of an ion-exchangeable alkali metal of said crystalline alumino-silicate being replaced with hydrogen and/or at least one polyvalent metal before and/or after said blending.
Claim 18
Dependent Claim
168 words
A catalyst for the conversion of hydrocarbon prepared by the process which comprises preparing silica-alumina by reacting a water-soluble aluminum salt and a water-soluble silicon salt in an aqueous solution while maintaining the pH at least at 10, said salts being water-soluble at said pH, adding to the reaction product and acid to adjust the pH from about 1 to below 5 and adding to the aqueous acid solution an alkali to raise the pH to 5-9; blending said silica-alumina and a crystalline alumino-silicate zeolite having a silica and alumina molar ratio of at least 2.5:1 and a micro-pore diameter of 5-15A so that the finished catalyst contains 5-60% by weight of said crystalline alumino-silicate; and carrying thereon at least one hydrogenation-active metal; said blending of crystalline alumino-silicate being conducted at any step before drying for dehydration of said silica-alumina, and at least 60% of an ion-exchangeable alkali metal of said crystalline alumino-silicate being replaced with hydrogen and/or at least one polyvalent metal before and/or after said blending.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |