US4347123A
Expired / Lapsed
US
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Reforming with multimetallic catalysts
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1980-05-05
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Granted: 1982-08-31
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Expires: 2000-05-05
Abstract
Abstract A catalyst constituted of a Group VI-B metal, especially chromium and molybdenum, composited with an inorganic oxide support, notably alumina, neutralized; and the use of such catalyst in reforming naphthas of high olefin content, particularly non-hydrofined olefinic naphthas which contain high concentrations of nitrogen and sulfur.
Inventors
- 👤 Charles H. Mauldin
- 👤 William C. Baird, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:32
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
119 words
In a process for reforming an olefinic, nitrogen and sulfur containing hydrocarbon feed by contact thereof with a dried, calcined catalyst comprised of from about 0.1 to about 20 percent of a Group VI-B metal component composited with an inorganic oxide support, the improvement comprising contacting and post-treating said dried, calcined catalyst composite with a solution of an alkali or alkaline-earth metal compound, incorporating from about 0.1 percent to about 4 percent of an alkali or alkaline-earth metal substantially entirely upon the surface of said catalyst composite sufficient to neutralize the Bronsted acidity of sid catalyst composite, again drying, and again calcining said neutralized catalyst composite, and then contacting said hydrocarbon feed with said dried, calcined, post-neutralized catalyst composite.
Claim 2
Dependent Claim
119 words
In a process for reforming an olefinic, nitrogen and sulfur containing hydrocarbon feed by contact thereof with a dried, calcined catalyst comprised of from about 0.1 to about 20 percent of a Group VI-B metal component composited with an inorganic oxide support, the improvement comprising contacting and post-treating said dried, calcined catalyst composite with a solution of an alkali or alkaline-earth metal compound, incorporating from about 0.1 percent to about 4 percent of an alkali or alkaline-earth metal substantially entirely upon the surface of said catalyst composite sufficient to neutralize the Bronsted acidity of sid catalyst composite, again drying, and again calcining said neutralized catalyst composite, and then contacting said hydrocarbon feed with said dried, calcined, post-neutralized catalyst composite.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the inorganic oxide support is alumina.
Claim 4
Dependent Claim
22 words
The process of claim 1 wherein the incorporated alkali or alkaline-earth metal component ranges from about 0.1 percent to about 2 percent.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein the catalyst composite is contacted and treated with an aqueous solution of a Group I-A or Group II-A metal carbonate, bicarbonate, or hydroxide.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the dried, calcined, neutralized catalyst composite is reduced by contact with hydrogen prior to contact with said hydrocarbon feed.
Claim 7
Dependent Claim
22 words
The process of claim 1 wherein the catalyst contains from about 1 percent to about 10 percent of the Group VI-B metal.
Claim 8
Dependent Claim
24 words
The process of claim 1 wherein the catalyst contains from about 0.1 percent to about 4 percent of the alkali or alkaline earth metal.
Claim 9
Dependent Claim
36 words
The process of claim 1 wherein the catalyst contains from about 1 percent to about 10 percent of the Group VI-B metal, and from about 0.1 to about 4 percent of the alkali or alkaline-earth metal.
Claim 10
Dependent Claim
14 words
The process of claim 1 wherein the Group VI-B metal is chromium or molybdenum.
Claim 11
Dependent Claim
21 words
The process of claim 1 wherein the alkali or alkaline-earth metal is an alkali metal characterized as potassium, sodium or cesium.
Claim 12
Dependent Claim
17 words
The process of claim 1 wherein the catalyst is sulfided, and contains to about 7 percent sulfur.
Claim 13
Dependent Claim
18 words
The process of claim 11 wherein the catalyst contains from about 0.05 percent to about 2 percent sulfur.
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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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |