Zeolite nanocrystal aggregates
US-10300455-B2 · May 28, 2019 · US
Zeolites with hierarchical porosity
US10773965B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10773965-B2 |
| Application number | US-201816112103-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 24, 2018 |
| Priority date | Aug 5, 2013 |
| Publication date | Sep 15, 2020 |
| Grant date | Sep 15, 2020 |
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Abstract
Official abstract text for this publication.
The present invention concerns zeolites with hierarchical porosity having a molar ratio Si/Al of between 1 and 1.4, inclusive, of which the average diameter, as a number, is between 0.1 μm and 20 μm, having controlled and optimized crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m2·g−1 and 400 m2·g−1. The present invention also concerns the method for preparing said zeolites with hierarchical porosity.
First claim
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The invention claimed is: 1. A hierarchically porous zeolite in the form of crystals having at least the following characteristics: Si/AI mole ratio of between 1 and 1.4, limits inclusive, a numerical mean diameter of the crystals of between 0.1 μm and 20 μm, limits inclusive, and mesoporosity such that the mesoporous outer surface area is between 40 m 2 ·g −1 and 400 m 2 ·g −1 , wherein the hierarchically porous zeolite comprises a pure zeolite phase, and has a micropore volume Vμp which satisfies the equation Vμp=Vμp R ±15%, where Vμp R represents the micropore volume measured, under the same conditions, for a zeolite of the same chemical nature and of the same crystal structure, but having a mesopore outer surface area which is less than 40 m 2 ·g −1 . 2. The zeolite according to claim 1 , wherein the zeolite is an FAU zeolite, or an LTA zeolite. 3. The zeolite according to claim 1 , wherein the zeolite is a zeolite X, zeolite MSX, zeolite LSX, or zeolite EMT. 4. The zeolite according to claim 1 , wherein the zeolite is a zeolite X. 5. The zeolite according to claim 1 , wherein the zeolite is a zeolite MSX. 6. The zeolite according to claim 1 , wherein the zeolite is a zeolite LSX. 7. The zeolite according to claim 1 , wherein the zeolite is an LTA zeolite. 8. The zeolite according to claim 1 , wherein the micropore volume Vμp satisfies the equation Vμp=Vμp R ±10%. 9. The zeolite according to claim 1 , wherein the micropore volume Vμp satisfies the equation Vμp=Vμp R ±5%. 10. The zeolite according to claim 1 , wherein the mesoporous outer surface area is between 60 m 2 ·g −1 and 200 m 2 ·g −1 . 11. The zeolite according to claim 1 , wherein the numerical mean diameter of the crystals is between 0.1 μm and 10 μm. 12. The zeolite according to claim 1 , wherein the numerical mean diameter of the crystals is between 0.5 μm and 10 μm. 13. The zeolite according to claim 1 , wherein the numerical mean diameter of the crystals is between 0.5 μm and 5 μm.
Assignees
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Classifications
Faujasite type, e.g. type X or Y · CPC title
Pore diameter distribution · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
obtained by TEM, STEM, STM or AFM · CPC title
Pore volume · CPC title
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Frequently asked questions
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- What does patent US10773965B2 cover?
- The present invention concerns zeolites with hierarchical porosity having a molar ratio Si/Al of between 1 and 1.4, inclusive, of which the average diameter, as a number, is between 0.1 μm and 20 μm, having controlled and optimized crystallinity, and having mesoporosity such that the mesoporous outer surface area is between 40 m2·g−1 and 400 m2·g−1. The present invention also concerns the metho…
- Who is the assignee on this patent?
- Arkema France
- What technology area does this patent fall under?
- Primary CPC classification C01B39/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 15 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).