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US5364998A
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Process for the selective hydrogenation of hydrocarbons
Assignee: IFP Energies nouvelles
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Filing: 1993-04-02
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Granted: 1994-11-15
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Expires: 2013-04-02
Abstract
Abstract A process for the selective hydrogenation of unsaturated hydrocarbons is characterized in that the catalyst contains a group VIII metal and an element chosen from within the group constituted by gallium and indium.
Inventors
- 👤 Patrick Sarrazin
- 👤 Jean-Paul Boitiaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/32; C10G45/34; C10G45/40; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/54; B01J23/56; B01J23/62; B01J23/70; B01J23/74; B01J23/755; B01J23/76; B01J23/825; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C5/08; C07C5/09; C07C7/00; C07C7/148; C07C7/163; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/54; C07C2523/56; C07C2523/62; C07C2523/70; C07C2523/74; C07C2523/755; C07C2523/76; C07C2523/825
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
106 words
A process for the selective hydrogenation of diolefins in a charge consisting essentially of monoolefins and, as impurities, diolefins, comprising contacting the charge and hydrogen with a supported catalyst at a temperature between 0° and 200° C. and a pressure between 20 and 300 bars in the absence of carbon monoxide, said catalyst, based on its total weight, containing: a) 0.1 to 10% of at least one group VIII metal chosen from within the group consisting of nickel, palladium, platinum, rhodium and ruthenium; b) 0.01 to 10% of at least one additional metal of group IIIA chosen from within the group consisting of gallium and indium.
Claim 2
Dependent Claim
106 words
A process for the selective hydrogenation of diolefins in a charge consisting essentially of monoolefins and, as impurities, diolefins, comprising contacting the charge and hydrogen with a supported catalyst at a temperature between 0° and 200° C. and a pressure between 20 and 300 bars in the absence of carbon monoxide, said catalyst, based on its total weight, containing: a) 0.1 to 10% of at least one group VIII metal chosen from within the group consisting of nickel, palladium, platinum, rhodium and ruthenium; b) 0.01 to 10% of at least one additional metal of group IIIA chosen from within the group consisting of gallium and indium.
Claim 3
Dependent Claim
15 words
Process according to claim 1, wherein the group VIII metal is palladium, platinum or nickel.
Claim 4
Dependent Claim
40 words
A process according to claim 2, wherein the support is a silica, an alumina, a silica-alumina, an aluminate of an alkali metal, or of an alkaline earth metal, or of zinc, or of cadmium, or a mixture of said aluminates.
Claim 5
Dependent Claim
19 words
A process according to claim 1 wherein the group VIII metal concentration is between 0.2 and 5% by weight.
Claim 6
Dependent Claim
19 words
A process according to claim 1 wherein the group IIIA metal concentration is between 0.1 and 5% by weight.
Claim 7
Dependent Claim
24 words
A process according to claim 1 wherein the molar ratio of the group IIIA metal to group VIII metal is between 0.2 and 5.
Claim 8
Dependent Claim
15 words
A process according to claim 6, wherein the molar ratio is between 0.3 and 2.
Claim 9
Dependent Claim
32 words
A process according to claim 1, wherein the supported catalyst is formed by the deposition of the group IIIA metal on the support, followed by the deposition of the group VIII metal.
Claim 10
Dependent Claim
27 words
A process according to claim 8, wherein the support impregnated by the group IIIA metal undergoes a reduction prior to the deposition of the group VIII metal.
Claim 11
Dependent Claim
13 words
A process according to claim 1, wherein the group IIIA metal is gallium.
Claim 12
Dependent Claim
13 words
A process according to claim 1, wherein the group IIIA metal is indium.
Claim 13
Dependent Claim
13 words
A process according to claim 2, wherein the group IIIA metal is gallium.
Claim 14
Dependent Claim
13 words
A process according to claim 2, wherein the group IIIA metal is indium.
Claim 15
Dependent Claim
34 words
A process according to claim 12, wherein the support is a silica, an alumina, a silica-alumina, an aluminate of an alkali metal, alkaline earth metal, zinc or cadmium, or a mixture of said aluminate.
Claim 16
Dependent Claim
34 words
A process according to claim 13, wherein the support is a silica, an alumina, a silica-alumina, an aluminate of an alkali metal, alkaline earth metal, zinc or cadmium, or a mixture of said aluminates.
Claim 17
Dependent Claim
19 words
A process according to claim 14, wherein the group VIII metal concentration is between 0.2% and 5% by weight.
Claim 18
Dependent Claim
19 words
A process according to claim 15, wherein the group VIII metal concentration is between 0.2% and 5% by weight.
Claim 19
Dependent Claim
19 words
A process according to claim 16, wherein the group IIIA metal concentration is between 0.1% and 5% by weight.
Claim 20
Dependent Claim
19 words
A process according to claim 17, wherein the group IIIA metal concentration is between 0.1% and 5% by weight.
Claim 21
Dependent Claim
16 words
A process according to claim 1, wherein the charge consists essentially of butenes contaminated by butadiene.
Claim 22
Dependent Claim
16 words
A process according to claim 1, wherein the charge consists essentially of propylene contaminated by propadiene.
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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) | 1997-11-14 | 1998-05-16 | 1998-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-14 | 2002-05-16 | 2002-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-14 | 2006-05-16 | 2006-11-15 | $7700.00 | Window Closed / Lapsed |