Patent US4251499A successfully refreshed from Google Patents.
US4251499A
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Process for the preparation of ferrierite
Assignee: Shell USA Inc
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Filing: 1979-12-03
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Granted: 1981-02-17
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Expires: 1999-12-03
Abstract
Abstract A Process is disclosed for the preparation of zeolite ferrierite of high purity by hydrothermal crystallization from a starting mixture containing at least one compound selected from piperidine and alkyl-substituted piperidines.
Inventors
- 👤 Johannes M. Nanne
- 👤 Martin F. M. Post
- 👤 Willem H. J. Stork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0254; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J29/00; B01J29/04; B01J29/06; B01J29/65; C; C01; C01B; C01B39/00; C01B39/02; C01B39/44; C01B39/445; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C10G45/00; C10G45/58; C10G45/60; C10G45/64; Y; Y10; Y10S; Y10S423/00; Y10S423/23
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A process for the preparation of ferrierite which comprises maintaining an aqueous mixture at a temperature of 100°-200° C. which contains one or more compounds of an alkali metal (M), one or more aluminum compounds, one or more silicon compounds and at least one compound (NR) selected from piperidine and alkyl-substituted piperidines wherein in the mixture the various compounds are present in the following molar ratio, expressed in moles of the oxides, with the exception of piperidine and alkyl-substituted piperidines: SiO 2 :Al 2 O 3 >15; H 2 O:SiO 2 =5-500; NR:SiO 2 =0.05-1.0, and M 2 O:Al 2 O 3 >1; until the ferrierite has formed, and separating the ferrierite crystals from the mother liquor.
Claim 2
Dependent Claim
117 words
A process for the preparation of ferrierite which comprises maintaining an aqueous mixture at a temperature of 100°-200° C. which contains one or more compounds of an alkali metal (M), one or more aluminum compounds, one or more silicon compounds and at least one compound (NR) selected from piperidine and alkyl-substituted piperidines wherein in the mixture the various compounds are present in the following molar ratio, expressed in moles of the oxides, with the exception of piperidine and alkyl-substituted piperidines: SiO 2 :Al 2 O 3 >15; H 2 O:SiO 2 =5-500; NR:SiO 2 =0.05-1.0, and M 2 O:Al 2 O 3 >1; until the ferrierite has formed, and separating the ferrierite crystals from the mother liquor.
Claim 3
Dependent Claim
14 words
A process according to claim 1 wherein the starting mixture contains a methyl piperidine.
Claim 4
Dependent Claim
18 words
A process according to claim 1 wherein the starting mixture contains a sodium compound as alkali metal compound.
Claim 5
Dependent Claim
23 words
A process according to claim 1 wherein the starting mixture contains sodium water glass as silicon compound and aluminum sulphate as aluminum compound.
Claim 6
Dependent Claim
51 words
A process according to claim 1 wherein in the aqueous mixture the various compounds are present in the following molar ratio, expressed in moles of the oxides, with the exception of piperidine and alkyl-substituted piperidines: SiO 2 :Al 2 O 3 >20, H 2 O:SiO 2 =10-100, and NR:SiO 2 =0.2-0.6.
References Cited (Backward Citations)
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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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |