US3900557A
Expired / Lapsed
US
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Anchored homogeneous-type catalysts for h-d exchange
Assignee: Atomic Energy of Canada Ltd AECL
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Filing: 1973-07-16
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Granted: 1975-08-19
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Expires: 1993-07-16
Abstract
Abstract A process is described for preparing anchored, transition metal catalysts by a displacement reaction in which the diphenylphosphino group on a cross-linked polystyrene of the general formula: IRREVERSIBLY DISPLACES A MORE WEAKLY BOUND LIGAND IN THE COORDINATION SPHERE OF AN HOMOGENEOUS TRANSITION METAL CATALYST COMPLEX. The preferred transition metals are rhodium, ruthenium and iridium. The anchored catalysts, are generally useful in promoting H-D exchange between hydrogen-containing gas streams and liquid water or alcohols. These catalysts are also active in hydrogenation, hydroformylation and polymerization reactions.
Inventors
- 👤 Graeme Gilroy Strathdee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:38
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/49; C07C45/50; B; B01; B01J; B01J31/00; B01J31/16; B01J31/165; B01J31/1658; B01J31/24; B01J31/2404; C07C5/00; C07C5/02; C07C5/03; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/321; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; B01J2531/00; B01J2531/80; B01J2531/82; B01J2531/821; B01J2531/822; B01J2531/827; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/16; C07C2531/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
A PROCESS FOR THE CATALYZED H-D EXCHANGE BETWEEN HYDROGEN-CONTAINING GASEOUS STREAMS AND LIQUID WATER OR ALCOHOLS CHARACTERIZED BY THE USE THEREIN OF AN ANCHORED, TRANSITION METAL CATALYST PREPARED BY REACTING A DIPHENYLPHOSPHINOMETHYLATED POLYSTYRENE OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
37 words
A PROCESS FOR THE CATALYZED H-D EXCHANGE BETWEEN HYDROGEN-CONTAINING GASEOUS STREAMS AND LIQUID WATER OR ALCOHOLS CHARACTERIZED BY THE USE THEREIN OF AN ANCHORED, TRANSITION METAL CATALYST PREPARED BY REACTING A DIPHENYLPHOSPHINOMETHYLATED POLYSTYRENE OF THE GENERAL FORMULA:
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the homogeneous catalyst is Mu -dichlorotetraethylene dirhodium.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the homogeneous catalyst is Mu -dichlorodicyclopentadiene-rhodium.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein the homogeneous catalyst is bis-(ethylene)-rhodium acetylacetonate, and including the step of treating the acetylacetonate product with HCl to produce the desired anchored catalyst.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein the homogeneous catalyst is iridiumdicyclooctene chloride.
References Cited (Backward Citations)
US3681021A
Cited
US3789112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |