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US4414005A
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Method of encapsulating materials in a zeolite in a stable manner
Assignee: European Atomic Energy Community Euratom
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Filing: 1981-10-06
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Granted: 1983-11-08
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Expires: 2001-10-06
Abstract
Abstract The present invention relates to compounds, elements or ions encapsulated in a zeolite in a stable manner by adsorption, chemisorption or ion exchange, by using a zeolite treated before together with, or after the introduction of the material to be enclosed with a modifying agent selected from the group consisting of silanes, boranes and germanes, which may be substituted by one or more halogen atoms and/or hydrocarbon groups, and after the introduction closing the pores by a further treatment with the modifying agent and/or by an oxidation treatment.
Inventors
- 👤 Paul J. De Bievre
- 👤 Etienne F. Vansant
- 👤 Guido J. Peeters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:40
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/02; B; B01; B01D; B01D53/00; B01D53/02; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; F; F17; F17C; F17C11/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
54 words
A method of reducing the pore size of zeolites comprising treating a zeolite with a modifying agent to penetrate, be adsorbed in said pores and reduce the pore size in a controlled manner, said modifying agent being selected from the group consisting of silanes, halosilanes, alkylsilanes, boranes, haloboranes and alkylboranes, germanes, halogermanes and alkylgermanes.
Claim 2
Independent Claim
54 words
A method of reducing the pore size of zeolites comprising treating a zeolite with a modifying agent to penetrate, be adsorbed in said pores and reduce the pore size in a controlled manner, said modifying agent being selected from the group consisting of silanes, halosilanes, alkylsilanes, boranes, haloboranes and alkylboranes, germanes, halogermanes and alkylgermanes.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said modifying agent is selected from the group consisting of silane, dimethylsilane, dichlorodimethylsilane, methyl trichlorosilane and diborane.
Claim 4
Independent Claim
77 words
A method of separating mixtures, which comprises contacting pore-containing zeolites with a mixture of components, selectively adsorbing at least one component of the mixture in the pores of the zeolite, separating the zeolite from the non-adsorbed component and desorbing the absorbed substances, said zeolite having been treated with a modifying agent selected from the group consisting of silanes, halosilanes, alkylsilanes, boranes, haloboranes and alkylboranes, germanes, halogermanes and alkylgermanes to reduce the pore size to a desired dimension.
Claim 5
Independent Claim
77 words
A method of separating mixtures, which comprises contacting pore-containing zeolites with a mixture of components, selectively adsorbing at least one component of the mixture in the pores of the zeolite, separating the zeolite from the non-adsorbed component and desorbing the absorbed substances, said zeolite having been treated with a modifying agent selected from the group consisting of silanes, halosilanes, alkylsilanes, boranes, haloboranes and alkylboranes, germanes, halogermanes and alkylgermanes to reduce the pore size to a desired dimension.
Claim 6
Dependent Claim
75 words
A zeolite containing trapped material in the form of molecules or ions inside its pores, a major part of said pores being partially closed by a modifying agent selected from the group consisting of silanes, halosilanes, alkylsilanes, boranes, haloboranes and alkylboranes, germanes, halogermanes and alkylgermanes which are bound chemically or physically to the walls of the pores, the openings of said pores being too small to allow trapped materials from passing out of the pores.
Claim 7
Dependent Claim
75 words
A zeolite containing trapped material in the form of molecules or ions inside its pores, a major part of said pores being partially closed by a modifying agent selected from the group consisting of silanes, halosilanes, alkylsilanes, boranes, haloboranes and alkylboranes, germanes, halogermanes and alkylgermanes which are bound chemically or physically to the walls of the pores, the openings of said pores being too small to allow trapped materials from passing out of the pores.
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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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |