US3862910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative dehydrogenation catalyst and process of preparation thereof
Assignee: Phillips Petroleum Co
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Filing: 1973-07-20
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Granted: 1975-01-28
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Expires: 1993-07-20
Abstract
Abstract Oxidative dehydrogenation of organic compounds is carried out in the presence of a potassium/iron/phosphorus/oxygen catalyst composition. A method of preparing the catalyst composition comprising associating potassium with iron and subsequently associating the potassium-iron composite with phosphorus.
Inventors
- 👤 Robert S Cichowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:31
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J23/00; B01J23/70; B01J23/76; B01J23/78; B01J27/18; B01J27/185; B01J27/1853; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A method in accordance with claim 1 wherein a. the potassium and iron are present in a weight ratio in the range of about 0.005:1 to about 0.15:1, b. the calcining of said potassium/iron mixture is carried out at a temperature in the range of about 1,600*F to about 2, 000*F, c. the phosphorus compound is present in an amount in the range of about 1 to about 5 times the stoichiometric amount required to react with all the iron in the form of phosphate ions, and d. the calcining of said potassium/iron/phosphorus mixture is carried out at a temperature in the range of about 800*F to about 1,400*F.
Claim 2
Dependent Claim
24 words
A method in accordance with claim 1 wherein said potassium compound is K2CO3, said iron compound is Fe2O3, and said phosphorus compound is H3PO4.
Claim 3
Dependent Claim
181 words
A method in accordance with claim 1 for preparing an oxidative dehydrogenation catalyst composite which consists essentially of potassium, iron, phosphorus, and oxygen, which comprises the sequential steps of: a. contacting, in the absence of phosphorus, a potassium compound with an iron compound, the weight ratio of potassium to iron being in the range of about 0.005:1 to about 0.15:1; b. calcining the thus-contacted potassium compound and iron compound at a temperature within the range of about 1,600*F to about 2,000*F for a period of time in the range of about 0.1 to about 30 hours; c. admixing the thus-calcined composition containing potassium and iron with a phosphorus-containing compound, the phosphorus of said phosphorus-containing compound being present in an amount of 1 to 5 times the stoichiometric amount required to react with all of the iron in the form of a phosphate ion; and d. calcining the resulting admixture containing potassium, iron, and phosphorus at a temperature within the range of about 800*F to about 1,400*F for a period of time in the range of about 1 to about 25 hours.
Claim 4
Dependent Claim
24 words
A method in accordance with claim 4 wherein said potassium compound is K2CO3, said iron compound is Fe2O3, and said phosphorus-containing compound is H3PO4.
Claim 5
Dependent Claim
139 words
A CATALYST COMPOSITE WHICH CONSISTS ESSENTIALLY OF POTASSIUM, IRON, PHOSPHORUS, AND OXYGEN, AND WHICH IS PREPARED BY THE SEQUENTIAL STEPS OF: A. CONTACTING, IN THE ABSENCE OF PHOSPHORUS, A POTASSIUM COMPOUND WITH AN IRON COMPOUND; B. CALCINING THE THUS-CONTACTED POTASSIUM COMPOUND AND IRON COMPOUND AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 1,600*F TO ABOUT 2,000*F FOR A PERIOD OF TIME IN THE RANGE OF ABOUT 0.1 TO ABOUT 30 HOURS; C. ADMIXING THE THUS-CALCINED COMPOSITION CONTAINING POTASSIUM AND IRON WITH A PHOSPHORUS-CONTAINING COMPOUND; AND D. CALCINING THE RESULTING ADMIXTURE CONTAINING POTASSIUM, IRON AND PHOSPHORUS AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 800*F TO ABOUT 1,400*F FOR A PERIOD OF TIME IN THE RANGE OF ABOUT 1 TO ABOUT 25 HOURS; SAID POTASSIUM, IRON, AND PHOSPHORUS COMPOUNDS BEING THE OXIDES OR COMPOUNDS CONVERTIBLE TO THE OXIDES ON CALCINATION.
Claim 6
Dependent Claim
62 words
A catalyst composite in accordance with claim 6 wherein the potassium and iron are present in a weight ratio in the range of about 0.005:1 to about 0.15:1 and the phosphorus is present in an amount in the range of about 1 to about 5 times the stoichiometric amount required to react with all the iron in the form of phosphate ions.
Claim 7
Dependent Claim
25 words
A catalyst composite in accordance with claim 6 wherein said potassium compound is K2CO3, said iron compound is Fe2O3, and said phosphoruscontaining compound is H3PO4.
Claim 8
Dependent Claim
25 words
A catalyst composite in accordance with claim 7 wherein said potassium compound is K2CO3, said iron compound is Fe2O3, and said phosphorus-containing compound is H3PO4.
References Cited (Backward Citations)
US2870228A
Cited
US3342820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |