Devices for purifying exhaust gas
US-10413868-B2 · Sep 17, 2019 · US
Method for producing zeolite
US2017190588A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017190588-A1 |
| Application number | US-201715466185-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 22, 2017 |
| Priority date | Sep 26, 2014 |
| Publication date | Jul 6, 2017 |
| Grant date | — |
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- Title
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Abstract
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There is provided a method for producing a zeolite more excellent in moisture absorption characteristics. The method includes physically pulverizing a zeolite that has a gradient of a Na/Si value from a surface of the zeolite in a depth direction, that has a proportion of the Na/Si value at a depth of 10 nm from the surface to the Na/Si value at the surface of 90% or more, and that has a proportion of the Na/Si value at a depth of 30 nm from the surface to the Na/Si value at the surface of 70% or more, the Na/Si value representing a composition ratio between Na and Si, and crystallizing the physically pulverized zeolite.
First claim
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1 . A method for producing a zeolite, the method comprising: physically pulverizing a zeolite that has a gradient of a Na/Si value from a surface of the zeolite in a depth direction, that has a proportion of the Na/Si value at a depth of 10 nm from the surface to the Na/Si value at the surface of 90% or more, and that has a proportion of the Na/Si value at a depth of 30 nm from the surface to the Na/Si value at the surface of 70% or more, the Na/Si value representing a composition ratio between Na and Si; and crystallizing the physically pulverized zeolite. 2 . The method for producing a zeolite according to claim 1 , wherein the Na/Si value at a depth of 10 nm is larger than the Na/Si value at a depth of 30 nm. 3 . The method for producing a zeolite according to claim 1 , wherein the crystallization is performed by hydrothermal synthesis. 4 . The method for producing a zeolite according to claim 2 , wherein the crystallization is performed by hydrothermal synthesis.
Assignees
Inventors
Classifications
Milling, crushing or grinding · CPC title
Other properties not specified above · CPC title
Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof · CPC title
Synthetic zeolitic molecular sieves · CPC title
- C01B39/14Primary
Type A · CPC title
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- What does patent US2017190588A1 cover?
- There is provided a method for producing a zeolite more excellent in moisture absorption characteristics. The method includes physically pulverizing a zeolite that has a gradient of a Na/Si value from a surface of the zeolite in a depth direction, that has a proportion of the Na/Si value at a depth of 10 nm from the surface to the Na/Si value at the surface of 90% or more, and that has a propor…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01B39/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 06 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).