US4563371A
Expired / Lapsed
US
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Process for preparing metallized porous solid bodies
Assignee: Bayer AG
•
Filing: 1983-12-23
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Granted: 1986-01-07
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Expires: 2003-12-23
Abstract
Abstract The metallization of porous solid bodies, such as, for example, ion exchange materials, by loading the surfaces of the metal-free substrates with transition metal ions and subsequently treating them with reducing agents can be improved by activating the substrates, before or after the loading with metal ions, with elements of group 1 or 8 of the periodic table or compounds thereof and sensitizing any activating ions still present. The metallization products are useful hydrogenation catalysts.
Inventors
- 👤 Kirkor Sirinyan
- 👤 Peter M. Lange
- 👤 Rudolf Merten
- 👤 Alfred Mitschker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/1601; C23C18/1633; C23C18/1635; C23C18/1644; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/208; C23C18/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
In a process for preparing a metallized porous solid body including loading the surfaces of a metal-free porous solid body substrate with Ni or Co ions and conducting activation with a collodial metal activating solution containing palladium or an organometallic activating solution containing palladium, wherein the improvement comprises activating the substrates after said loading and subsequently contacting said substrates with a reducing bath containing 10 to 200 g/liter of a reducing agent and wherein said reducing bath consists essentially of solvent and reducing agent or solvent, reducing agent and complexing agent.
Claim 2
Dependent Claim
91 words
In a process for preparing a metallized porous solid body including loading the surfaces of a metal-free porous solid body substrate with Ni or Co ions and conducting activation with a collodial metal activating solution containing palladium or an organometallic activating solution containing palladium, wherein the improvement comprises activating the substrates after said loading and subsequently contacting said substrates with a reducing bath containing 10 to 200 g/liter of a reducing agent and wherein said reducing bath consists essentially of solvent and reducing agent or solvent, reducing agent and complexing agent.
Claim 3
Dependent Claim
16 words
A process according to claim 1, which further comprising sensitizing activating palladium remaining after said activation.
Claim 4
Dependent Claim
16 words
A process according to claim 2, wherein said sensitizing is effected by a SnCl 2 solution.
Claim 5
Dependent Claim
39 words
A process according to claim 1, wherein said solution of palladium comprises compounds having in addition to groups necessary for bonding to said Ni or Co at least one further functional group for anchoring said compound to said substrate.
Claim 6
Dependent Claim
17 words
A process according to claim 1, wherein said porous solid body substrate is an ion exchange material.
Claim 7
Dependent Claim
44 words
A process according to claim 1, wherein the porous solid body substrate contain anchor groups suitable for fixing ions, said anchor groups including ##STR2## where n is 0 to 6, m is 1 to 6, and Y is OH, Cl, F, Br or I.
Claim 8
Dependent Claim
26 words
A process according to claim 1, wherein the metal content is 5 to 95% by weight of the total weight of the resultant metallized solid body.
Claim 9
Dependent Claim
11 words
Metallized porous solid bodies obtained by the process of claim 1.
Claim 10
Dependent Claim
29 words
A process according to claim 1, wherein said reducing agent is selected from the group consisting of alkali metal boranes, dimethyl-aminoboranes, diethylaminoboranes, alkali metal hypophosphites, formalins and mixtures thereof.
Claim 11
Dependent Claim
31 words
A process according to claim 9, wherein said complexing agent is selected from the group consisting of sodium citrate, ammonium citrate, citric acid, NH 4 OH, NH 4 Cl and ammonia.
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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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |