US3843745A
Expired / Lapsed
US
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Oxidative dehydrogenation process catalyzed by magnesium ferrite
Assignee: Texas Petrochemicals Corp
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Filing: 1972-05-16
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Granted: 1974-10-22
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Expires: 1992-05-16
Abstract
Abstract Improved catalysts for dehydrogenation can be prepared by coprecipitating the metal containing catalysts from a solution of metal ions in the presence of a high molecular weight polyhydric material such as potato starch. The result of having the polyhydric material present is that the precipitate has the form of a gelatinous precipitate of improved processability. The catalyst itself is more active in dehydrogenations and physically stronger than comparable catalyst prepared by conventional methods.
Inventors
- 👤 H Christman
- 👤 P Teel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J37/0018; B01J23/00; B01J23/70; B01J23/74; B01J23/745; B01J23/76; B01J37/02; B01J37/03; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
25 words
IN A PROCESS FOR THE VAPOR PHASE OXIDATIVE DEHYDROGENATION OF ACYCLIC NON-QUARTERNARY HYDROCARBONS HAVING 4 TO 5 CONTIGUOUS CARBON ATOMS AND HAVING AT LEAST ONE
Claim 2
Dependent Claim
25 words
IN A PROCESS FOR THE VAPOR PHASE OXIDATIVE DEHYDROGENATION OF ACYCLIC NON-QUARTERNARY HYDROCARBONS HAVING 4 TO 5 CONTIGUOUS CARBON ATOMS AND HAVING AT LEAST ONE
Claim 3
Dependent Claim
15 words
The process according to claim 1 wherein said polyhydric compound is a polyester or polyether.
Claim 4
Dependent Claim
13 words
The process according to claim 1 wherein said polyhydric compound is a polysaccharide.
Claim 5
Dependent Claim
11 words
The process according to claim 3 wherein said polysaccharide is branched.
Claim 6
Dependent Claim
21 words
The process according to claim 4 wherein the polysaccharide has a 1 - 4, 1 - 6 or mixed glycoside linkage.
Claim 7
Dependent Claim
30 words
The process according to claim 4 wherein said polysaccharide is selected from the group consisting of potato starch, corn starch, tapioca starch, arrowroot starch, gum arabic, gum tragacanth and dextran.
Claim 8
Dependent Claim
27 words
The process according to claim 1 wherein the insoluble metal component metal component is an oxide, mixture of oxides or compounds that are the precursors of oxides.
Claim 9
Dependent Claim
37 words
The process according to claim 3 wherein the soluble metal component is iron oxide and magnesium oxide in hydrochloric acid, the precipitating agent is an alkaline solution and the insoluble component is iron hydroxide and magnesium hydroxide.
Claim 10
Dependent Claim
11 words
The process according to claim 3 wherein the hydrocarbons are n-butenes.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |