Patent US3716545A successfully refreshed from Google Patents.
US3716545A
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Oxidative conversion including dehydrogenation
Assignee: Phillips Petroleum Co
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Filing: 1970-01-16
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Granted: 1973-02-13
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Expires: 1990-01-16
Abstract
Abstract Oxidative conversion of olefins and/or diolefins including the dehydrogenation of organic compounds is carried out with an ironphosphorus-oxygen catalyst wherein the amount of phosphorus is greater than the stoichiometric amount required to react with all of the iron in the catalyst and form monophosphate ions (PO4 3). The activity of the phosphorus-containing catalyst can be maintained by continuous or intermittent addition of phosphorus containing compounds.
Inventors
- 👤 D Ripley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:27
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/28; B01J27/285; B01J27/14; B01J27/185; B01J27/1853; C; C07; C07C; C07C5/00; C07C5/42; C07C5/48; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/36; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
155 words
An oxidative dehydrogenation conversion process comprising a. admixing at least one dehydrogenatable organic compound with molecular oxygen or molecular oxygen-containing gas, wherein said dehydrogenatable organic compound is an alkene or alkadiene of three to 10 carbon atoms per molecule, cycloalkene or cycloalkadiene of four to 10 carbon atoms per molecule, alkylpyridine or alkyl aromatic of one To four alkyl groups per molecule which alkyl groups contain up to six carbon atoms per group such that at least one alkyl group contains at least two carbon atoms, and b. contacting said admixture from said step (a) under oxidative dehydrogenation conversion conditions with an oxidative dehydrogenation catalyst composition consisting essentially of iron-phosphorus-oxygen wherein the phosphorus content thereof represents 1.01 to 5 times the stoichiometric amount of said phosphorus required to react with all of said iron in the form of phosphate, and wherein the oxygen:phosphorus atomic ratio in said catalyst composition ranges from about 3:1 to 3.999:1.
Claim 2
Dependent Claim
155 words
An oxidative dehydrogenation conversion process comprising a. admixing at least one dehydrogenatable organic compound with molecular oxygen or molecular oxygen-containing gas, wherein said dehydrogenatable organic compound is an alkene or alkadiene of three to 10 carbon atoms per molecule, cycloalkene or cycloalkadiene of four to 10 carbon atoms per molecule, alkylpyridine or alkyl aromatic of one To four alkyl groups per molecule which alkyl groups contain up to six carbon atoms per group such that at least one alkyl group contains at least two carbon atoms, and b. contacting said admixture from said step (a) under oxidative dehydrogenation conversion conditions with an oxidative dehydrogenation catalyst composition consisting essentially of iron-phosphorus-oxygen wherein the phosphorus content thereof represents 1.01 to 5 times the stoichiometric amount of said phosphorus required to react with all of said iron in the form of phosphate, and wherein the oxygen:phosphorus atomic ratio in said catalyst composition ranges from about 3:1 to 3.999:1.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein said amount of phosphorus is from 1.01 to 2 times said stoichiometric amount.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said iron is in the ferric form.
Claim 5
Dependent Claim
13 words
The process of claim 1 wherein said iron is in the ferrous form.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said iron is in the ferroso-ferric form.
Claim 7
Dependent Claim
55 words
The process of claim 1 wherein said alkenes and alkadienes contain four to six carbon atoms per molecule, said cycloalkenes and cycloalkyldienes contain four to six carbon atoms per molecule, said alkylpyridines or said alkylaromatics contain one to two alkyl groups per molecule wherein said alkyl groups contain two to six carbon atoms per group.
Claim 8
Dependent Claim
82 words
The process of claim 1 carried out using a temperature in the range of about 700* to about 1,300* F, a pressure in the range of about 0.05 to about 250 psia, an oxygen-to-gaseous organic compound feed volume ratio in the range of about 0.01/1 to about 3/1, and an organic compound feed space rate in volumes of organic compound feed vapor per volume of catalyst per hour at 32* F and 14.7 psi in the range about 50 to about 5,000.
Claim 9
Dependent Claim
30 words
The process of claim 7 further employing steam in said admixture at a steam feed volume ratio to organic feed volume in the range of about 0.1/1 to about 100/1.
Claim 10
Dependent Claim
12 words
The process of claim 8 wherein said organic compound feed comprises isopentenes.
Claim 11
Dependent Claim
12 words
The process of claim 9 wherein said organic compound feed comprises 2-methylbutene-2.
Claim 12
Dependent Claim
12 words
The process of claim 8 wherein said organic compound feed comprises 1,3-butadiene.
Claim 13
Dependent Claim
12 words
The process of claim 9 wherein said organic compound feed comprises isoprene.
Claim 14
Dependent Claim
26 words
The process of claim 1 wherein the activity of said catalyst is maintained by the addition of at least one phosphorus-containing compound to the reaction stream.
Claim 15
Dependent Claim
12 words
The process of claim 13 wherein said phosphorus-containing compound is phosphoric acid.
Claim 16
Dependent Claim
12 words
The process of claim 13 wherein said phosphorus-containing compound is phosphorus pentoxide.
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |