US4533779A
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Supported palladium-gold catalyst, its manufacture and use in reactions for the selective hydrogenation of diolefinic and/or acetylenic hydrocarbons
Assignee: IFP Energies nouvelles
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Filing: 1984-11-20
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Granted: 1985-08-06
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Expires: 2004-11-20
Abstract
Abstract Supported palladium-gold catalyst of high resistance to poisoning by sulfur compounds, not subject to elution by vinylacetylene and not inducing a substantial formation of oligomers, for use in hydrogenation reactions wherein acetylenics and diolefins are selectively hydrogenated, said catalyst being obtained by the steps of: admixing a palladium compound with an inorganic carrier, roasting in the presence of an oxygen-containing gas, treating with a reducing agent, admixing a halogenated gold compound with the resulting composition, treating with a reducing agent, treating with a compound having a basic reaction so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting, in the presence of an oxygen-containing gas, the palladium and gold compounds being used in convenient proportions so that the catalyst contains 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Inventors
- 👤 Jean-Paul Boitiaux
- 👤 Jean Oosyns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:09
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/48; C10G45/50; B; B01; B01J; B01J23/00; B01J23/38; B01J23/48; B01J23/52; B01J23/40; B01J23/44
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
127 words
In a process comprising selectively hydrogenating diolefinic hydrocarbons in contact with a catalyst, the improvement wherein the catalyst is produced by a process consisting essentially of the sequential steps of: admixing a palladium compound with an inorganic carrier, roasting in the presence of an oxygen-containing gas, treating with a reducing agent, admixing a halogenated gold compound with the resultant composition, treating with a reducing agent, washing with an aqueous solution of a compound having a basic reaction so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting in the presence of an oxygen-containing gas, the palladium and gold compounds being used in amounts such that the resultant catalyst contains 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 2
Dependent Claim
127 words
In a process comprising selectively hydrogenating diolefinic hydrocarbons in contact with a catalyst, the improvement wherein the catalyst is produced by a process consisting essentially of the sequential steps of: admixing a palladium compound with an inorganic carrier, roasting in the presence of an oxygen-containing gas, treating with a reducing agent, admixing a halogenated gold compound with the resultant composition, treating with a reducing agent, washing with an aqueous solution of a compound having a basic reaction so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting in the presence of an oxygen-containing gas, the palladium and gold compounds being used in amounts such that the resultant catalyst contains 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the compound having a basic reaction is ammonia, an amine or an ammonium, sodium or potassium carbonate or bicarbonate.
Claim 4
Dependent Claim
15 words
A process according to claim 1 wherein the compound having a basic reaction is ammonia.
Claim 5
Dependent Claim
15 words
A process according to claim 1 wherein the roasting steps are effected at 100°-500° C.
Claim 6
Dependent Claim
16 words
A process according to claim 1 wherein the reducing agent is hydrogen, used at 100°-400° C.
Claim 7
Dependent Claim
19 words
A process according to claim 1 wherein the reducing agent is formic acid or hydrazine, used at 10°-100° C.
Claim 8
Dependent Claim
13 words
A process according to claim 1 wherein palladium is introduced as the acetylacetonate.
Claim 9
Dependent Claim
23 words
A process according to claim 1 wherein the carrier is an alumina having a surface of between 1 and 100 m 2 /g.
Claim 10
Dependent Claim
144 words
A process according to claim 1 wherein the catalyst is obtained by admixing a palladium compound with an inorganic carrier, roasting at 100°-500° C. in the presence of an oxygen-containing gas, treating with a reducing agent selected from formic acid, hydrazine and hydrogen, admixing a halogenated gold compound with the resultant composition, treating with formic acid or hydrazine as reducing agent at 10°-100° C., washing with an aqueous solution of a compound having a basic reaction selected from ammonia, an amine and an ammonium sodium or potassium carbonate or bicarbonate, so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting at 100°-500° C. in the presence of an oxygen-containing gas, the palladium and gold compounds being used in sufficient amounts to provide the resultant catalyst with 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 11
Dependent Claim
144 words
A process according to claim 1 wherein the catalyst is obtained by admixing a palladium compound with an inorganic carrier, roasting at 100°-500° C. in the presence of an oxygen-containing gas, treating with a reducing agent selected from formic acid, hydrazine and hydrogen, admixing a halogenated gold compound with the resultant composition, treating with formic acid or hydrazine as reducing agent at 10°-100° C., washing with an aqueous solution of a compound having a basic reaction selected from ammonia, an amine and an ammonium sodium or potassium carbonate or bicarbonate, so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting at 100°-500° C., in the presence of an oxygen-containing gas, the palladium and gold compounds being used in sufficient amounts to provide the resultant catalyst with 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 12
Dependent Claim
127 words
In a process comprising selectively hydrogenating acetylenic hydrocarbons in contact with a catalyst, the improvement wherein the catalyst is produced by a process consisting essentially of the sequential steps of: admixing a palladium compound with an inorganic carrier, roasting in the presence of an oxygen-containing gas, treating with a reducing agent, admixing a halogenated gold compound with the resultant composition, treating with a reducing agent, washing with an aqueous solution of a compound having a basic reaction so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting in the presence of an oxygen-containing gas, the palladium and gold compounds being used in amounts such that the resultant catalyst contains 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 13
Dependent Claim
127 words
In a process comprising selectively hydrogenating acetylenic hydrocarbons in contact with a catalyst, the improvement wherein the catalyst is produced by a process consisting essentially of the sequential steps of: admixing a palladium compound with an inorganic carrier, roasting in the presence of an oxygen-containing gas, treating with a reducing agent, admixing a halogenated gold compound with the resultant composition, treating with a reducing agent, washing with an aqueous solution of a compound having a basic reaction so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting in the presence of an oxygen-containing gas, the palladium and gold compounds being used in amounts such that the resultant catalyst contains 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 14
Dependent Claim
26 words
A process according to claim 11 wherein the compound having a basic reaction is ammonia, an amine or an ammonium, sodium or potassium carbonate or bicarbonate.
Claim 15
Dependent Claim
15 words
A process according to claim 11 wherein the compound having a basic reaction is ammonia.
Claim 16
Dependent Claim
15 words
A process according to claim 11 wherein the roasting steps are effected at 100°-500° C.
Claim 17
Dependent Claim
16 words
A process according to claim 11 wherein the reducing agent is hydrogen, used at 100°-400° C.
Claim 18
Dependent Claim
19 words
A process according to claim 11 wherein the reducing agent is formic acid or hydrazine, used at 10°-100° C.
Claim 19
Dependent Claim
13 words
A process according to claim 11 wherein palladium is introduced as the acetylacetonate.
Claim 20
Dependent Claim
23 words
A process according to claim 11 wherein the carrier is an alumina having a surface of between 1 and 100 m 2 /g.
Claim 21
Dependent Claim
144 words
A process according to claim 11 wherein the catalyst is obtained by admixing a palladium compound with an inorganic carrier, roasting at 100°-500° C. in the presence of an oxygen-containing gas, treating with a reducing agent selected from formic acid, hydrazine and hydrogen, admixing a halogenated gold compound with the resultant composition, treating with formic acid or hydrazine as reducing agent at 10°-100° C., washing with an aqueous solution of a compound having a basic reaction selected from ammonia, an amine and an ammonium sodium or potassium carbonate or bicarbonate, so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting at 100°-500° C. in the presence of an oxygen-containing gas, the palladium and gold compounds being used in sufficient amounts to provide the resultant catalyst with 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
Claim 22
Dependent Claim
144 words
A process according to claim 11 wherein the catalyst is obtained by admixing a palladium compound with an inorganic carrier, roasting at 100°-500° C. in the presence of an oxygen-containing gas, treating with a reducing agent selected from formic acid, hydrazine and hydrogen, admixing a halogenated gold compound with the resultant composition, treating with formic acid or hydrazine as reducing agent at 10°-100° C., washing with an aqueous solution of a compound having a basic reaction selected from ammonia, an amine and an ammonium sodium or potassium carbonate or bicarbonate, so as to lower the halogen content of the catalyst below 10 ppm by weight, and roasting at 100°-500° C. in the presence of an oxygen-containing gas, the palladium and gold compounds being used in sufficient amounts to provide the resultant catalyst with 0.03 to 1% palladium and 0.003 to 0.3% gold by weight.
References Cited (Backward Citations)
DE1290930B
Cited
US3954601A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |