US4136013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion catalyst for hydrogenation processes
Assignee: Dow Chemical Co
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Filing: 1977-02-28
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Granted: 1979-01-23
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Expires: 1997-02-28
Abstract
Abstract In the catalytic hydrogenation of a substance in a water-immiscible organic liquid medium, a metallic hydrogenation catalyst is conveniently and effectively dispersed in the reaction mixture by addition as an emulsion of an aqueous solution of a salt of the metal in the liquid medium. The method is particularly applicable to the liquefaction of coal.
Inventors
- 👤 Norman G. Moll
- 👤 George J. Quarderer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:38
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
In the process for hydrogenating a coal slurry, the slurry comprising finely divided coal dispersed within a water-immiscible liquid phase, the process comprising contacting the slurry with hydrogen in the presence of a metal-containing hydrogenation catalyst, the improvement wherein the metal-containing catalyst is initially added to the water-immiscible liquid phase as an emulsion in the water-immiscible liquid phase of a water solution of a compound of the metal, the compound being convertible to the hydrogenation catalyst under the conditions of hydrogenation.
Claim 2
Dependent Claim
81 words
In the process for hydrogenating a coal slurry, the slurry comprising finely divided coal dispersed within a water-immiscible liquid phase, the process comprising contacting the slurry with hydrogen in the presence of a metal-containing hydrogenation catalyst, the improvement wherein the metal-containing catalyst is initially added to the water-immiscible liquid phase as an emulsion in the water-immiscible liquid phase of a water solution of a compound of the metal, the compound being convertible to the hydrogenation catalyst under the conditions of hydrogenation.
Claim 3
Dependent Claim
10 words
The process of claim 1 wherein the metal is molybdenum.
Claim 4
Dependent Claim
12 words
The process of claim 2 wherein the molybdenum compound is ammonium heptamolybdate.
Claim 5
Dependent Claim
21 words
The process of claim 2 wherein 0.01-1 percent of molybdenum is present in the slurry based on the weight of coal.
Claim 6
Dependent Claim
12 words
The process of claim 4 wherein 0.02-0.5 percent of molybdenum is present.
Claim 7
Dependent Claim
15 words
The process fo claim 1 wherein the metal is a mixture of cobalt and molybdenum.
Claim 8
Dependent Claim
15 words
The process of claim 1 wherein the metal is a mixture of nickel and molybdenum.
Claim 9
Dependent Claim
10 words
The process of claim 1 wherein the metal is iron.
Claim 10
Dependent Claim
10 words
The process of claim 1 wherein the metal is tungsten.
Claim 11
Dependent Claim
14 words
The process of claim 1 wherein the hydrogenation temperature is about 400° C.-500° C.
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) | 1982-01-22 | 1982-07-24 | 1983-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-22 | 1986-07-24 | 1987-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-22 | 1990-07-24 | 1991-01-23 | $7700.00 | Window Closed / Lapsed |