US3900525A
Expired / Lapsed
US
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Manganese ferrite catalyzed oxidative dehydrogenation
Assignee: Texas Petrochemicals Corp
•
Filing: 1974-06-03
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Granted: 1975-08-19
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Expires: 1994-06-03
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
- 👤 Harold F Christmann
- 👤 Paul H Teel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:14
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/889; B01J23/8892; B01J37/00; B01J37/0009; B01J37/0018; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
24 words
IN A PROCESS FOR THE VAPOR PHASE OXIDATIVE DEHYDROGENATION ACYCLIC NON-QUATERNARY HYDROCARBONS HAVING 4 TO 5 CONTIGUOUS CARBON ATOMS AND HAVING AT LEAST ONE
Claim 2
Dependent Claim
24 words
IN A PROCESS FOR THE VAPOR PHASE OXIDATIVE DEHYDROGENATION ACYCLIC NON-QUATERNARY 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
17 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 3 wherein the soluble metal component is iron chloride and manganese chloride in water and the precipitating agent is an alkaline solution.
Claim 9
Dependent Claim
11 words
The process according to claim 3 wherein the hydrocarbons are n-butenes.
Claim 10
Dependent Claim
24 words
The process of claim 1 wherein the insoluble metal component is an oxide, mixture of oxides or compounds that are the precursors of oxides.
References Cited (Backward Citations)
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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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |