Patent US6332863B1 successfully refreshed from Google Patents.
US4149998A
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US
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Supported metal interaction catalysts
Assignee: Bank of Boston Connecticut
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Filing: 1977-02-23
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Granted: 1979-04-17
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Expires: 1997-02-23
Abstract
Abstract This invention relates to a class of heterogeneous catalysts. More particularly, it pertains to catalysts consisting of group VIII metals dispersed on oxide carriers selected from the group consisting of Ti, V, Nb and Ta and mixtures thereof, and zirconium titanate and BaTiO3, it having been discovered that these oxide carriers are capable of exerting remarkable effects on the properties of the Group VIII metals so dispersed. Among the strong effects on the properties of supported Group VIII metals which these carriers have been observed to bring about are the suppression of the capacity of the Group VIII metals to chemisorb hydrogen at room temperature, the suppression of the capacity of the Group VIII metals to chemisorb carbon monoxide at room temperature and profound alterations in the activity and/or selectivity of various Group VIII metals in reactions such as the dehydrocyclization of n-heptane and the hydrogenolysis of ethane.
Inventors
- 👤 Samuel J. Tauster
- 👤 Lawrence L. Murrell
- 👤 Shun C. Fung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/648; B01J23/40; B01J23/58; B01J23/70; B01J23/74; B01J23/76; B01J23/78; B01J23/84; B01J23/847
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
80 words
Improved catalytic composition consisting of a metal selected from the group consisting of iridium, osmium, rhodium and mixtures thereof and an oxide of titanium support prepared by depositing said iridium, osmium, rhodium and mixtures thereof on the oxide of titanium and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 200° C., thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 2
Dependent Claim
80 words
Improved catalytic composition consisting of a metal selected from the group consisting of iridium, osmium, rhodium and mixtures thereof and an oxide of titanium support prepared by depositing said iridium, osmium, rhodium and mixtures thereof on the oxide of titanium and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 200° C., thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the reducing temperature is at least 300° C.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein the reducing temperature is at least 375° C.
Claim 5
Dependent Claim
89 words
Improved catalytic composition consisting of a metal selected from the group consisting of iron, nickel, cobalt and mixtures thereof and a support selected from the group consisting of the oxides of vanadium, niobium, tantalum and zirconium-titanate prepared by depositing said iron, nickel, cobalt, and mixtures thereof on the support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 375° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 6
Dependent Claim
89 words
Improved catalytic composition consisting of a metal selected from the group consisting of iron, nickel, cobalt and mixtures thereof and a support selected from the group consisting of the oxides of vanadium, niobium, tantalum and zirconium-titanate prepared by depositing said iron, nickel, cobalt, and mixtures thereof on the support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 375° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 7
Dependent Claim
14 words
The composition of claim 4 wherein the reducing temperature is at least 425° C.
Claim 8
Dependent Claim
13 words
The composition of claim 4 wherein the support is an oxide of vanadium.
Claim 9
Dependent Claim
16 words
The composition of claim 6 wherein the oxide of vanadium is V 2 O 3 .
Claim 10
Dependent Claim
13 words
The composition of claim 4 wherein the support is an oxide of niobium.
Claim 11
Dependent Claim
16 words
The composition of claim 8 wherein the oxide of niobium is Nb 2 O 5 .
Claim 12
Dependent Claim
13 words
The composition of claim 4 wherein the support is an oxide of tantalum.
Claim 13
Dependent Claim
16 words
The composition of claim 10 wherein the oxide of tantalum is Ta 2 O 5 .
Claim 14
Dependent Claim
11 words
The composition of claim 4 wherein the support is zirconium titanate.
Claim 15
Dependent Claim
84 words
Improved catalytic composition consisting of a metal selected from the group consisting of palladium, iridium, osmium, ruthenium, rhodium and mixtures thereof and an oxide of vanadium support prepared by depositing the palladium, iridium, osmium, ruthenium, rhodium and mixtures thereof on the oxide of vanadium and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 200° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 16
Dependent Claim
84 words
Improved catalytic composition consisting of a metal selected from the group consisting of palladium, iridium, osmium, ruthenium, rhodium and mixtures thereof and an oxide of vanadium support prepared by depositing the palladium, iridium, osmium, ruthenium, rhodium and mixtures thereof on the oxide of vanadium and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 200° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 17
Dependent Claim
14 words
The composition of claim 13 wherein the reducing temperature is at least 300° C.
Claim 18
Dependent Claim
14 words
The composition of claim 13 wherein the reducing temperature is at least 375° C.
Claim 19
Dependent Claim
16 words
The composition of claim 13 wherein the oxide of vanadium is V 2 O 3 .
Claim 20
Dependent Claim
86 words
Improved catalytic composition consisting of a metal selected from the group consisting of palladium, platinum, iridium, osmium, ruthenium, rhodium and mixtures thereof and an oxide of niobium support prepared by depositing said palladium, platinum, iridium, osmium, ruthenium, rhodium and mixtures thereof on the oxide of niobium and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 200° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 21
Dependent Claim
86 words
Improved catalytic composition consisting of a metal selected from the group consisting of palladium, platinum, iridium, osmium, ruthenium, rhodium and mixtures thereof and an oxide of niobium support prepared by depositing said palladium, platinum, iridium, osmium, ruthenium, rhodium and mixtures thereof on the oxide of niobium and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 200° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 22
Dependent Claim
14 words
The composition of claim 17 wherein the reducing temperature is at least 300° C.
Claim 23
Dependent Claim
14 words
The composition of claim 17 wherein the reducing temperature is at least 375° C.
Claim 24
Dependent Claim
16 words
The composition of claim 17 wherein the oxide of niobium is Nb 2 O 5 .
Claim 25
Dependent Claim
86 words
Improved catalytic composition consisting of a metal selected from the group consisting of palladium, platinum, osmium, iridium, ruthenium, rhodium and mixtures thereof and an oxide of tantalum support prepared by depositing said palladium, platinum, osmium, iridium, ruthenium, rhodium and mixtures thereof on the oxide of tantalum and pretreating the composition prior to use, the improvement comprising as a final step before use reducing the composition in a hydrogen atmosphere at a temperature of at least 300° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 26
Dependent Claim
86 words
Improved catalytic composition consisting of a metal selected from the group consisting of palladium, platinum, osmium, iridium, ruthenium, rhodium and mixtures thereof and an oxide of tantalum support prepared by depositing said palladium, platinum, osmium, iridium, ruthenium, rhodium and mixtures thereof on the oxide of tantalum and pretreating the composition prior to use, the improvement comprising as a final step before use reducing the composition in a hydrogen atmosphere at a temperature of at least 300° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 27
Dependent Claim
14 words
The composition of claim 21 wherein the reducing temperature is at least 400° C.
Claim 28
Dependent Claim
14 words
The composition of claim 21 wherein the reducing temperature is at least 500° C.
Claim 29
Dependent Claim
16 words
The composition of claim 21 wherein the oxide of tantalum is Ta 2 O 5 .
Claim 30
Dependent Claim
81 words
Improved catalytic composition consisting of a metal selected from the group consisting of iridium, osmium, palladium, rhodium, platinum and mixtures thereof and zirconium titanate support prepared by depositing said iridium, osmium, palladium, rhodium, platinum and mixtures thereof on the zirconium-titanate support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 250° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 31
Dependent Claim
81 words
Improved catalytic composition consisting of a metal selected from the group consisting of iridium, osmium, palladium, rhodium, platinum and mixtures thereof and zirconium titanate support prepared by depositing said iridium, osmium, palladium, rhodium, platinum and mixtures thereof on the zirconium-titanate support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 250° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 32
Dependent Claim
14 words
The composition of claim 25 wherein the reducing temperature is at least 350° C.
Claim 33
Dependent Claim
81 words
Improved catalytic composition consisting of a metal selected from the group consisting of nickel, cobalt, iron and mixtures thereof and an alkaline earth titanate support prepared by depositing said iron, nickel, cobalt and mixtures thereof on the alkaline earth titanate support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 300° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 34
Dependent Claim
81 words
Improved catalytic composition consisting of a metal selected from the group consisting of nickel, cobalt, iron and mixtures thereof and an alkaline earth titanate support prepared by depositing said iron, nickel, cobalt and mixtures thereof on the alkaline earth titanate support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 300° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 35
Dependent Claim
14 words
The composition of claim 27 wherein the reducing temperature is at least 400° C.
Claim 36
Dependent Claim
13 words
The composition of claim 27 wherein the alkaline earth titanate is barium titanate.
Claim 37
Dependent Claim
87 words
Improved catalytic composition consisting of a metal selected from the group consisting of iridium, platinum, palladium, ruthenium, rhodium, osmium and mixtures thereof and an alkaline earth titanate support prepared by depositing said iridium, platinum, palladium, ruthenium, rhodium, osmium and mixtures thereof on the alkaline earth titanate support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 550° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 38
Dependent Claim
87 words
Improved catalytic composition consisting of a metal selected from the group consisting of iridium, platinum, palladium, ruthenium, rhodium, osmium and mixtures thereof and an alkaline earth titanate support prepared by depositing said iridium, platinum, palladium, ruthenium, rhodium, osmium and mixtures thereof on the alkaline earth titanate support and pretreating the composition prior to use, the improvement comprising, as a final step before use, reducing the composition in a hydrogen atmosphere at a temperature of at least 550° C. thereby producing a composition which exhibits suppressed hydrogen chemisorption.
Claim 39
Dependent Claim
14 words
The composition of claim 30 wherein the reducing temperature is at least 650° C.
Claim 40
Dependent Claim
13 words
The composition of claim 30 wherein the alkaline earth titanate is barium titanate.
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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) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |