US3855324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of organic compounds
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1972-05-16
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Granted: 1974-12-17
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Expires: 1992-05-16
Abstract
Abstract Novel hydrogenation catalysts are formed by impregnating a suitable support material with an aqueous solution of a salt of a transition metal; heat-treating the impregnated support at a temperature above 500*F. to form chemical complexes on the surface of the support and to drive off moisture and absorbed oxygen; activating the surface complex by contacting the impregnated support with a soluble organometallic compound wherein the metal constituent is selected from Groups I, II and III of the Periodic Chart of the Elements, and thereafter treating the activated support material in the presence of a gaseous stream containing hydrggen at a temperature of at least 300*F. to form a highly stable heterogeneous catalyst. The novel supported catalysts of the instant invention have been found to be highly active for the hydrogenation of organic compounds under extremely mild conditions.
Inventors
- 👤 J Mertzweiller
- 👤 H Tenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:31
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6525; B01J37/00; B01J37/02; B01J37/0201; B01J37/0203; B01J37/08; B01J37/082; B01J37/086; B01J37/16; B01J37/18; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/141; C07C5/00; C07C5/02; C07C5/03; C11D1/02; C11D1/04; C11D1/10; B01J37/03; C07C2521/00; C07C2521/02; C07C2521/04; C07C2531/00; C07C2531/16; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/18; C07C2601/20
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
175 words
A PROCESS FOR THE HYDROGENATION OF A FEED CONTAINING CYCLODODECATRIENE COMPRISING THE STEPS OF: FORMING A CATALYST BY IMPREGNATING A SUPPORT CONTAINING AT LEAST ABOUT 0.1 MILLIMOLE OF HYDROXYL GROUPS PER GRAM OF SUPPORT, SAID SUPPORT COMPRISING ALUMINA WITH AN AQUEOUS SOLUTION OF A TRANSITION METAL SALT COMPRISING NICKEL ACETATE; HEAT TREATING THE IMPREGNATED SUPPORT AT A TEMPERATURE OF AT LEAST ABOUT 500*F; ACTIVATING THE HEAT-TREATED IMPREGNATED SUPPORT BY CONTACTING SAME WITH AN ORGANOMETALLIC COMPOUND HAVING THE FORMULA: QRN, WHEREIN Q IS SELECTED FROM GROUP I, II OR III METALS OF THE PERIODIC CHART OF THE ELEMENTS, R IS SELECTED FROM THE GROUP CONSISTING OF HYDRIDE AND ALKYL, ARYL, ALKARYL, ARALKYL AND CYCLOALKYL RADICALS CONTAINING FROM 1 TO ABOUT 20 CARBON ATOMS AND WHEREIN N RANGES FROM 1 TO 3 AND SATISIFES THE VALENCE OF Q; TREATING THE ACTIVATED SUPPORTED METAL COMPLEX IN THE PRESENCE OF HYDROGEN AT A TEMPERATURE OF AT LEAST ABOUT 300*F.; AND THEREAFTER CONTACTING SAID CATALYST WITH SAID FEED IN THE PRESENCE OF A HYDROGEN-CONTAINING GAS, THEREBY PRODUCING A HYDROGENATION REACTION.
Claim 2
Dependent Claim
175 words
A PROCESS FOR THE HYDROGENATION OF A FEED CONTAINING CYCLODODECATRIENE COMPRISING THE STEPS OF: FORMING A CATALYST BY IMPREGNATING A SUPPORT CONTAINING AT LEAST ABOUT 0.1 MILLIMOLE OF HYDROXYL GROUPS PER GRAM OF SUPPORT, SAID SUPPORT COMPRISING ALUMINA WITH AN AQUEOUS SOLUTION OF A TRANSITION METAL SALT COMPRISING NICKEL ACETATE; HEAT TREATING THE IMPREGNATED SUPPORT AT A TEMPERATURE OF AT LEAST ABOUT 500*F; ACTIVATING THE HEAT-TREATED IMPREGNATED SUPPORT BY CONTACTING SAME WITH AN ORGANOMETALLIC COMPOUND HAVING THE FORMULA: QRN, WHEREIN Q IS SELECTED FROM GROUP I, II OR III METALS OF THE PERIODIC CHART OF THE ELEMENTS, R IS SELECTED FROM THE GROUP CONSISTING OF HYDRIDE AND ALKYL, ARYL, ALKARYL, ARALKYL AND CYCLOALKYL RADICALS CONTAINING FROM 1 TO ABOUT 20 CARBON ATOMS AND WHEREIN N RANGES FROM 1 TO 3 AND SATISIFES THE VALENCE OF Q; TREATING THE ACTIVATED SUPPORTED METAL COMPLEX IN THE PRESENCE OF HYDROGEN AT A TEMPERATURE OF AT LEAST ABOUT 300*F.; AND THEREAFTER CONTACTING SAID CATALYST WITH SAID FEED IN THE PRESENCE OF A HYDROGEN-CONTAINING GAS, THEREBY PRODUCING A HYDROGENATION REACTION.
Claim 3
Dependent Claim
35 words
The process of claim 1 wherein the hydrogenation reaction is conducted at a temperature in the range of from about 0* to about 1,000*F. and at a pressure ranging between about 1 and 50 atmospheres.
Claim 4
Dependent Claim
50 words
The process of claim 1 wherein said catalyst is at least partially deactivated as a result of contacting same with said feed in the hydrogenation reaction, and where said deactivated catalyst is at least partially reactivated by treatment of same at elevated temperature in the presence of a stripping gas.
Claim 5
Dependent Claim
20 words
The process of claim 3 wherein said stripping gas is selected from the group consisting of hydrogen, nitrogen and methane.
Claim 6
Dependent Claim
11 words
The process of claim 4 wherein said stripping gas is hydrogen.
Claim 7
Dependent Claim
15 words
The process of claim 3 wherein said elevated temperatures range between about 200* to 1,200*F.
Claim 8
Dependent Claim
29 words
The process of claim 3 wherein the space velocity of the stripping gas ranges from about 100 to about 25,000 volumes of gas per volume of catalyst per hours.
Claim 9
Dependent Claim
67 words
The process of claim 1 wherein said catalyst is at least partially deactivated as a result of contacting same with said feed in the hydrogenation reaction, and where said deactivated catalyst is at least partially regenerated by (1) oxidizing same with air and (2) reactivating by contacting said oxidized catalyst with a trialkyl aluminum compound wherein the alkyl group contains from 1 to about 6 carbon atoms.
Claim 10
Dependent Claim
24 words
The process of claim 1 wherein Q has an atomic number of from 3 to 50, and wherein QRn is a trialkyl aluminum compound.
Claim 11
Dependent Claim
24 words
The process of claim 1 wherein the activated supported metal complex is treated in the presence of hydrogen at a temperature above about 800*F.
Claim 12
Dependent Claim
38 words
The process of claim 1 wherein the amount of transition metal impregnated on the support is in the range of from about 0.1 percent to about 30 percent based on total weight of deposited equivalent metal and support.
Claim 13
Dependent Claim
36 words
The process of claim 1 wherein said alumina support has a surface area greater than about 100 square meters per gram of support and a hydroxyl content of at least one millimole per gram of support.
Claim 14
Dependent Claim
17 words
The process of claim 12 wherein said impregnated support is heat-treated at a temperature of about 800*F.
Claim 15
Dependent Claim
44 words
The process of claim 12 wherein said heat-treated impregnated suppOrt is activating by contacting same with an organometallic compound comprising aluminum triethyl and wherein the activated supported metal complex is treated in the presence of hydrogen at a temperature of at least about 400*F.
Claim 16
Dependent Claim
28 words
The process of claim 14 wherein the aluminum triethyl is present in a paraffinic diluent in a concentration of about 20 wt. percent aluminum triethyl in the diluent.
Claim 17
Dependent Claim
29 words
The process of claim 1 wherein said impregnated support is heat-treated at a temperature ranging between about 600* and 1500*F. in order to remove liquid and adsorbed oxygen therefrom.
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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |