Patent US3856876A successfully refreshed from Google Patents.
US3856876A
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Disproportionation of saturated hydrocarbons employing a catalyst that comprises platinum and tungsten
Assignee: Chevron USA Inc
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Filing: 1973-02-08
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Granted: 1974-12-24
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Expires: 1993-02-08
Abstract
Abstract A process for disproportionation of saturated hydrocarbons which comprises contacting the saturated hydrocarbons in a disproportionation reaction zone and in the presence of no more than 5 weight percent olefins with a catalyst mass comprising a platinum component and a tungsten component, wherein the volumetric ratio of the platinum component to the tungsten component is greater than 2:7 and less than 7:2. Preferably the volumetric ratio of the platinum component to the tungsten component is between 3:7 and 10:7, and the reaction is preferably carried out at a temperature between 400* to 800*F.
Inventors
- 👤 R Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:04
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/08; C07C6/10; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6527
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A PROCESS FOR DISPROPORTIONATION OF SATURATED HYDROCARBONDS WHICH CONPRISES CONTACTING THE SATURATED HYDROCARBONS IN A DISPROPORTIONATION REACTION ZONE AT A TEMPERATURE BETWEEN 400*F AND BELOW 800*F AND A PRESSURE BETWEEN 100 AND 2,000 PSIG AND IN THE PRESENCE OF NO MORE THAN 5 WEIGHT PERCENT OLEFINS IN SAID REACTION ZONE WITH A CATALYST MASS COMPRISING A PLATINUM COMPONENT AND A TUNGSTEN COMPONENT WHREIN THE VOLUMETRIC RATIO OF THE PLATINUM COMPONENT TO THE TUNGSTEN COMPONENT IS GREATER THAN 2:7 AND LESS THAN 7:2.
Claim 2
Dependent Claim
82 words
A PROCESS FOR DISPROPORTIONATION OF SATURATED HYDROCARBONDS WHICH CONPRISES CONTACTING THE SATURATED HYDROCARBONS IN A DISPROPORTIONATION REACTION ZONE AT A TEMPERATURE BETWEEN 400*F AND BELOW 800*F AND A PRESSURE BETWEEN 100 AND 2,000 PSIG AND IN THE PRESENCE OF NO MORE THAN 5 WEIGHT PERCENT OLEFINS IN SAID REACTION ZONE WITH A CATALYST MASS COMPRISING A PLATINUM COMPONENT AND A TUNGSTEN COMPONENT WHREIN THE VOLUMETRIC RATIO OF THE PLATINUM COMPONENT TO THE TUNGSTEN COMPONENT IS GREATER THAN 2:7 AND LESS THAN 7:2.
Claim 3
Dependent Claim
43 words
A process in accordance with claim 1 wherein the weight percent of platinum in the platinum component is between 0.1 and 5.0 weight percent platinum and wherein the weight percent tungsten in the tungsten component is between 0.5 and 15 weight percent tungsten.
Claim 4
Dependent Claim
16 words
A process in accordance with claim 1 wherein the tungsten component comprises tungsten oxide on silica.
Claim 5
Dependent Claim
21 words
A process in accordance with claim 1 wherein the weight percent tungsten in the tungsten component is between 1.0 and 4.0.
Claim 6
Dependent Claim
89 words
A process for the disproportionation of alkanes which comprises contacting the alkanes at a temperature between 400* and below 800*F. and a pressure between 100 and 2,000 psig with a catalyst mass comprising a platinum component containing 0.1 to 5.0 weight percent platinum on an alumina support and a tungsten component comprising tungsten oxide on silica and containing between 0.5 weight percent tungsten and 15 weight percent tungsten, and wherein the volumetric ratio of the platinum component to the tungsten component is greater than 2:7 and less than 7:2.
Claim 7
Dependent Claim
89 words
A process for the disproportionation of alkanes which comprises contacting the alkanes at a temperature between 400* and below 800*F. and a pressure between 100 and 2,000 psig with a catalyst mass comprising a platinum component containing 0.1 to 5.0 weight percent platinum on an alumina support and a tungsten component comprising tungsten oxide on silica and containing between 0.5 weight percent tungsten and 15 weight percent tungsten, and wherein the volumetric ratio of the platinum component to the tungsten component is greater than 2:7 and less than 7:2.
Claim 8
Dependent Claim
25 words
A process in accordance with claim 5 wherein the volumetric ratio of the platinum component to the tungsten component is between about 3:7 and 10:7.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |