Patent US3344404A successfully refreshed from Google Patents.
Patent US4490481A successfully refreshed from Google Patents.
US4490481A
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US
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Supported palladium-gold catalyst, and its manufacture
Assignee: STE' FRANCAISE DES PRODUITS POUR CATALYSE CHEZ INSTITUT FRANCAIS DU PETROLE
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Filing: 1983-03-15
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Granted: 1984-12-25
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Expires: 2003-03-15
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 Cosyns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:40
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
110 words
A catalyst 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
110 words
A catalyst 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 catalyst 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 catalyst according to claim 2, wherein the compound having a basic reaction is ammonia.
Claim 5
Dependent Claim
15 words
A catalyst according to claim 1, wherein the roasting steps are effected at 100°-500° C.
Claim 6
Dependent Claim
16 words
A catalyst according to claim 1, wherein the reducing agent is hydrogen, used at 100°-400° C.
Claim 7
Dependent Claim
19 words
A catalyst according to claim 1, wherein the reducing agent is formic acid or hydrazine, used at 10°-100° C.
Claim 8
Dependent Claim
12 words
A catalyst according to claim 1, wherein palladium is introduced as acetylacetonate.
Claim 9
Dependent Claim
23 words
A catalyst 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
140 words
A catalyst according to claim 1, 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
145 words
A catalyst according to claim 1, 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, roasting at 100°-500° C. in the presence of an oxygen-containing gas, treating with hydrogen at 100°-400° 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
114 words
A process for producing a catalyst containing palladium and gold, 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
114 words
A process for producing a catalyst containing palladium and gold, 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 12, 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 10, wherein the reducing agent is formic acid or hydrazine, used at 10°-100° C.
Claim 19
Dependent Claim
12 words
A process according to claim 11, wherein palladium is introduced as 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
153 words
A process according to claim 11 for producing a catalyst containing palladium and gold, consisting essentially of the sequential steps of: 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
158 words
A process according to claim 11 for producing a catalyst containing palladium and gold, consisting essentially of the sequential steps of: 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, roasting at 100°-500° C. in the presence of an oxygen-containing gas, treating with hydrogen at 100°-400° 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.
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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) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |