US2967156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphated kaolin cracking catalyst
Assignee: Houdry Process Corp
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Filing: 1956-02-27
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Granted: 1961-01-03
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Talvenheimo Gerhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:00
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; Y; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
THE METHOD OF PREPARING ATTRITION RESISTANT PARTICLES OF ACTIVE CRACKING CATALYST WHICH CONSISTS ESSENTIALLY OF THE STEPS OF: THOROUGHLY ADMIXING KAOLIN CLAY WITH AN ACIDIC SOLUTION IN AN AMOUNT IN THE RANGE OF 30 TO 80% WEIGHT OF LIQUID TO WEIGHT OF DRY CLAY, SAID ACIDIC SOLUTION CONTAINING 10 TO 85% BY VOLUME OF 100% H2SO4, 1 TO 50% BY VOLUME OF 100% H3PO4 AND ANY REMAINING VOLUME PERCENT OF WATER, WHEREBY METAL SULFATES ARE FORMED IN THE KAOLIN CLAY; MAINTAINING THE ADMIXTURE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 250*F. TO ABOUT 400*F. TO OBTAIN A MORE COMPLETE REACTION BETWEEN THE ACID AND CLAY; TREATING THE THUS HEATING REACTION PRODUCT TO BRING ABOUT A COMPLETE DECOMPOSITION OF SAID METAL SULFATES WITH EVOLUTION OF SULFUR-OXIDE GASES, SAID DECOMPOSITION BEING EFFECTED IN THE PRESENCE OF A GAS MIXTURE CONSISTING ESSENTIALLY OF A REDUCING GAS AND STEAM AT A TEMPERATURE IN THE RANGE OF 750* TO 1600*F.; AND RECOVERING FROM SAID SULFATE DECOMPOSITION STEP, PHOSPHATE-CONTAINING CLAY PARTICLES HAVING ENHANCED HARDNESS AND LOWER COKE-FORMING TENDENCY AS AN ACTIVE CRACKING CATALYST.
Claim 2
Independent Claim
178 words
THE METHOD OF PREPARING ATTRITION RESISTANT PARTICLES OF ACTIVE CRACKING CATALYST WHICH CONSISTS ESSENTIALLY OF THE STEPS OF: THOROUGHLY ADMIXING KAOLIN CLAY WITH AN ACIDIC SOLUTION IN AN AMOUNT IN THE RANGE OF 30 TO 80% WEIGHT OF LIQUID TO WEIGHT OF DRY CLAY, SAID ACIDIC SOLUTION CONTAINING 10 TO 85% BY VOLUME OF 100% H2SO4, 1 TO 50% BY VOLUME OF 100% H3PO4 AND ANY REMAINING VOLUME PERCENT OF WATER, WHEREBY METAL SULFATES ARE FORMED IN THE KAOLIN CLAY; MAINTAINING THE ADMIXTURE AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 250*F. TO ABOUT 400*F. TO OBTAIN A MORE COMPLETE REACTION BETWEEN THE ACID AND CLAY; TREATING THE THUS HEATING REACTION PRODUCT TO BRING ABOUT A COMPLETE DECOMPOSITION OF SAID METAL SULFATES WITH EVOLUTION OF SULFUR-OXIDE GASES, SAID DECOMPOSITION BEING EFFECTED IN THE PRESENCE OF A GAS MIXTURE CONSISTING ESSENTIALLY OF A REDUCING GAS AND STEAM AT A TEMPERATURE IN THE RANGE OF 750* TO 1600*F.; AND RECOVERING FROM SAID SULFATE DECOMPOSITION STEP, PHOSPHATE-CONTAINING CLAY PARTICLES HAVING ENHANCED HARDNESS AND LOWER COKE-FORMING TENDENCY AS AN ACTIVE CRACKING CATALYST.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |