US3915897A
Expired / Lapsed
US
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Olefin disproportionation catalyst
Assignee: Phillips Petroleum Co
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Filing: 1973-10-26
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Granted: 1975-10-28
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Expires: 1993-10-26
Abstract
Abstract A catalyst for the olefin disproportionation of unsaturated hydrocarbons is provided comprising a physical mixture of a solid disproportionation catalyst and a double bond isomerization catalyst wherein the double bond isomerization catalyst is further treated with a base.
Inventors
- 👤 Robert E Reusser
- 👤 Stanley D Turk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:54
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
83 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A MIXTURE OF A SOLID OLEFIN DISPROPERTIONATION CATALYST CAPABLE OF CONVERING BUTNEN-2 AND ETHYLENE TO PROPYLENE AND AN MGO SOLID DOUBLE BOND ISOMERIZATION CATALYST CAPABLE OF ISOMERIZING BUTENE-2 TO BUTENE-1 UNDER THE CONDITIONS OF WHICH THE OLEFIN DISPROPERITATION CATALYST IS CAPABLE OF CONVERTING BUTNEN-2 AND EHTYLENE TO PROVIDE AND WHEREIN THE DOUBLE BOND ISOMERIZATION CATALYST IS CONTACTED WITH CALCIUM HYDROXIDE, AN ALKALI METAL HYDROXY, CARBONATE OR HALIDE PRIOR TO ADMIXTURE WITH THE SOLID OLEFIN DISPROPORTION CATALYST.
Claim 2
Dependent Claim
83 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF A MIXTURE OF A SOLID OLEFIN DISPROPERTIONATION CATALYST CAPABLE OF CONVERING BUTNEN-2 AND ETHYLENE TO PROPYLENE AND AN MGO SOLID DOUBLE BOND ISOMERIZATION CATALYST CAPABLE OF ISOMERIZING BUTENE-2 TO BUTENE-1 UNDER THE CONDITIONS OF WHICH THE OLEFIN DISPROPERITATION CATALYST IS CAPABLE OF CONVERTING BUTNEN-2 AND EHTYLENE TO PROVIDE AND WHEREIN THE DOUBLE BOND ISOMERIZATION CATALYST IS CONTACTED WITH CALCIUM HYDROXIDE, AN ALKALI METAL HYDROXY, CARBONATE OR HALIDE PRIOR TO ADMIXTURE WITH THE SOLID OLEFIN DISPROPORTION CATALYST.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the weight amount of double bond isomerization catalyst is in excess of the weight amount of the solid olefin disproportionation catalyst.
Claim 4
Dependent Claim
29 words
The composition of claim 2 wherein the weight amount of the double bond isomerization catalyst is 1.5 to 10 times the weight amount of the solid olefin disproportionation catalyst.
Claim 5
Dependent Claim
29 words
The composition of claim 1 wherein the solid olefin disproportionation catalyst comprises an oxide of molybdenum, tungsten, or rhenium on a support of alumina, silica, silica-alumina, or aluminum phosphate.
Claim 6
Dependent Claim
26 words
The composition of claim 4 wherein the MgO double bond isomerization catalyst is contacted with potassium hydroxide prior to admixture with the solid olefin disproportionation catalyst.
Claim 7
Dependent Claim
30 words
The composition of claim 4 wherein the solid olefin disproportionation catalyst is also treated with the metal hydroxide, carbonate, or halide prior to admixture with the double bond isomerization catalyst.
Claim 8
Dependent Claim
35 words
The composition of claim 1 wherein the composition is contacted with a stream of oxygen-containing gas at a temperature in the range of from 750* to 1,800* F. prior to contact with the feed olefin.
Claim 9
Dependent Claim
102 words
The composition of claim 1 which consists essentially of a mixture of tungsten oxide deposited on a support of silica and magnesium oxide wherein the weight amount of the magnesium oxide is 1.5 to 10 times the weight amount of the tungsten oxide on silica and the magnesium oxide is contacted with an aqueous solution of a treating agent selected from the group consisting of alkali metal hydroxides, carbonates, halides and calcium hydroxides prior to admixture with the tungsten oxide on silica to provide from about 0.007 to 3.5 g. metal equivalents per 100 g. of magnesium oxide after treatment and drying.
Claim 10
Dependent Claim
12 words
The composition of claim 8 wherein said treating agent is potassium hydroxide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |