US5149680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum group metal alloy catalysts for hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters
Assignee: BP PLC
•
Filing: 1990-11-19
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Granted: 1992-09-22
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Expires: 2010-11-19
Abstract
Abstract Catalyst composition comprising an alloy of at least one noble metal of group VIII of the Periodic Table and at least one metal capable of alloying with the group VIII noble metal, admixed with a component comprising at least one of the metals rhenium, tungsten or molybdenum, used for producing an alcohol and/or a carboxylic acid ester by reacting hydrogen with a carboxylic acid or anhydride thereof.
Inventors
- 👤 Melanie Kitson
- 👤 Peter S. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:31
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/17; C07C29/177; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/68; B01J23/683; B01J23/688; B01J23/70; B01J23/89; B01J23/8933; B01J23/8986; B01J23/8993; C07C29/132; C07C29/136; C07C29/147; C07C29/149
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
60 words
A catalyst composition comprising an admixture of component (A) comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table of the elements and (ii) at least one metal capable of alloying with the aforesaid Group VIII noble metal admixed with component (B) comprising at least one of the metals rhenium, tungsten and molybdenum.
Claim 2
Dependent Claim
60 words
A catalyst composition comprising an admixture of component (A) comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table of the elements and (ii) at least one metal capable of alloying with the aforesaid Group VIII noble metal admixed with component (B) comprising at least one of the metals rhenium, tungsten and molybdenum.
Claim 3
Dependent Claim
20 words
A catalyst composition as claimed in claim 1 in which at least one noble metal is palladium, rhodium or ruthenium.
Claim 4
Dependent Claim
36 words
A catalyst composition as claimed in claim 2 in which the noble metal comprises palladium and at least one metal capable of alloying with the noble metal comprising at least one of silver, gold and copper.
Claim 5
Dependent Claim
21 words
A catalyst composition as claimed in claim 3 in which the metal capable of alloying with the noble metal comprises silver.
Claim 6
Dependent Claim
36 words
A catalyst composition is claimed in claim 1, claim 2 or claim 3 in which the composition further incorporates a support component (C) comprising a graphite, an activated carbon, a silica, an alumina, or a silica/alumina.
Claim 7
Dependent Claim
21 words
A catalyst composition as claimed in claim 5 in which the support component (C) comprises a high surface area graphitised carbon.
Claim 8
Dependent Claim
155 words
A catalyst composition comprising component (A) comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table of the elements and (ii) at least one metal capable of alloying with the aforesaid Group VIII noble metal and a support component (C) comprising a high surface area graphitised carbon having a BET surface area of at least 300 m 2 /g; a ratio of BET to basal plane surface area of not greater than 4:1; and a ratio of basal plane surface area to edge surface area of at least 10:1, said graphitised carbon having been prepared by the successive steps of (1) heating a carbon material in an inert atmosphere at a temperature of from 900° to 3300° C., (2) oxidising the carbon at a temperature between 300° C. and 1200° C. and (3) heating in an inert atmosphere at a temperature of between 900° C. and 3000° C.
Claim 9
Dependent Claim
155 words
A catalyst composition comprising component (A) comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table of the elements and (ii) at least one metal capable of alloying with the aforesaid Group VIII noble metal and a support component (C) comprising a high surface area graphitised carbon having a BET surface area of at least 300 m 2 /g; a ratio of BET to basal plane surface area of not greater than 4:1; and a ratio of basal plane surface area to edge surface area of at least 10:1, said graphitised carbon having been prepared by the successive steps of (1) heating a carbon material in an inert atmosphere at a temperature of from 900° to 3300° C., (2) oxidising the carbon at a temperature between 300° C. and 1200° C. and (3) heating in an inert atmosphere at a temperature of between 900° C. and 3000° C.
Claim 10
Dependent Claim
24 words
A catalyst composition as claimed in claim 7 in which at least one noble metal comprises at least one of palladium, rhodium and ruthenium.
Claim 11
Dependent Claim
36 words
A catalyst composition as claimed in claim 8 in which the noble metal comprises palladium and at least one metal capable of alloying with the noble metal comprising at least one of silver, gold and copper.
Claim 12
Dependent Claim
21 words
A catalyst composition as claimed in claim 9 in which the metal capable of alloying with the noble metal comprises silver.
Claim 13
Dependent Claim
30 words
A catalyst composition as claimed in claim 7 in which the BET surface area of the high surface area graphitised carbon support is not greater than 1000 m 2 /g.
Claim 14
Dependent Claim
24 words
A catalyst composition as claimed in claim 7 in which the ratio of BET to basal plane surface area is not greater than 2.5:1.
Claim 15
Dependent Claim
24 words
A catalyst composition as claimed in claim 7 in which the ratio of basal surface area to edge surface area is at least 50:1.
Claim 16
Dependent Claim
25 words
A catalyst composition as claimed in claim 7 in which the ratio of basal plane surface area to edge surface area does not exceed 200:1.
Claim 17
Dependent Claim
38 words
A catalyst composition as claimed in claim 7 in which the step (2) of the preparation of the high surface area graphitised carbon support the weight loss of carbon is at least 10% and not greater than 40%.
Claim 18
Dependent Claim
30 words
A catalyst composition as claimed in claim 1 or claim 7 further incorporating at least one metal from Group IA and Group IIA of the Periodic Table of the Elements.
References Cited (Backward Citations)
US2322095A
Cited
GB433549A
Cited
GB457358A
Cited
US2861959A
Cited
US3363009A
Cited
US3424619A
Cited
US3506494A
Cited
US3536632A
Cited
US3829448A
Cited
US3770658A
Cited
US3789020A
Cited
US3922303A
Cited
US3840471A
Cited
US3956191A
Cited
GB1551741A
Cited
US4096156A
Cited
GB1534232A
Cited
US4105674A
Cited
US4136062A
Cited
US4104478A
Cited
EP0027979A1
Cited
US4359404A
Cited
US4316944A
Cited
US4301077A
Cited
US4500650A
Cited
US4456775A
Cited
DE3221077A1
Cited
US4517391A
Cited
US4611085A
Cited
US4513094A
Cited
US4524225A
Cited
US4609636A
Cited
EP0147219A2
Cited
EP0174219A1
Cited
EP0177393A1
Cited
US4777303A
Cited
EP0198682A2
Cited
EP0198681A2
Cited
US4826795A
Cited
US4804791A
Cited
US4794054A
Cited
US4716087A
Cited
US4772729A
Cited
EP0285420A1
Cited
US4827001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |