US4122040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum group metal catalyst
Assignee: BP PLC
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Filing: 1976-09-22
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Granted: 1978-10-24
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Expires: 1996-09-22
Abstract
Abstract Hydrogen transfer catalyst comprises (a) as support a graphite containing carbon having (1) a basal plane surface area of at least 100 m 2 /g, (2) a ratio of BET surface area to basal plane surface area of not more than 5:1 and (3) a ratio of basal plane surface area to edge surface area of at least 5:1 and (b) as active component, 0.01 to 10% by weight, of the total weight of catalyst of a platinum group metal disposed thereon. The catalyst is particularly suitable for reforming.
Inventors
- 👤 John James McCarroll
- 👤 John Trevor Kent Clark
- 👤 Stephen Robert Tennison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:10
CPC Classifications
B; B01; B01J; B01J35/00; B01J35/60; B01J21/00; B01J21/18; B01J23/00; B01J23/38; B01J23/40; B01J23/54; B01J23/56; B01J23/58; C; C01; C01B; C01B32/00; B01J35/61; B01J35/615; C07; C07C; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/58; C07C2601/00; C07C2601/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
A catalyst comprising (a) as support, a graphite-containing carbon having (1) a basal plane surface area of at least 100 m 2 /g, (2) a ratio of BET surface area to basal plane surface area of not more than 5:1 and (3) a ratio of basal plane surface area to edge surface area of at least 5:1 and (b) as active component, 0.01 to 10% by weight of a platinum group metal disposed thereon.
Claim 2
Dependent Claim
74 words
A catalyst comprising (a) as support, a graphite-containing carbon having (1) a basal plane surface area of at least 100 m 2 /g, (2) a ratio of BET surface area to basal plane surface area of not more than 5:1 and (3) a ratio of basal plane surface area to edge surface area of at least 5:1 and (b) as active component, 0.01 to 10% by weight of a platinum group metal disposed thereon.
Claim 3
Dependent Claim
19 words
A catalyst according to claim 1 wherein the active component is present in amount 0.1 to 5% by weight.
Claim 4
Dependent Claim
19 words
A catalyst according to either of claims 1 or 2 wherein the platinum group metal is platinum or iridium.
Claim 5
Dependent Claim
25 words
A catalyst according to claim 1 wherein the basal plane surface area is in the range 150 m 2 /g to 500 m 2 /g.
Claim 6
Dependent Claim
26 words
A catalyst according to claim 1 the ratio of the BET surface area to the basal plane surface area is in the range 2:1 to 1.01:1.
Claim 7
Dependent Claim
24 words
A catalyst according to claim 1 wherein the ratio of the basal plane surface area to the edge surface area is greater than 50:1.
Claim 8
Dependent Claim
24 words
A catalyst according to claim 6 wherein the ratio of the basal plane surface area to the edge surface area is greater than 300:1.
Claim 9
Dependent Claim
23 words
A catalyst according to claim 1 wherein the catalyst contains a modifying metal ion selected from the alkali and alkaline earth metal ions.
Claim 10
Dependent Claim
25 words
A catalyst according to claim 8 wherein the modifying metal ion is present in amount 10 to 300 atomic percent of the platinum group metal.
Claim 11
Dependent Claim
13 words
A catalyst according to claim 9 wherein the modifying metal ion is sodium.
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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |