Separation membrane structure
US-2017296980-A1 · Oct 19, 2017 · US
Zeolite membrane complex and method of producing zeolite membrane complex
US11534725B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11534725-B2 |
| Application number | US-202016806094-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 2, 2020 |
| Priority date | Oct 16, 2017 |
| Publication date | Dec 27, 2022 |
| Grant date | Dec 27, 2022 |
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Abstract
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A zeolite membrane complex comprises: a support; and a zeolite membrane formed on the support. The membrane is of SAT-type zeolite, and in an X-ray diffraction pattern obtained by X-ray irradiation to the zeolite membrane, a peak intensity around 2θ=13.9° is 1.5 times or more a peak intensity around 2θ=8.5°.
First claim
Opening claim text (preview).
The invention claimed is: 1. A zeolite membrane complex comprising: a support; and a zeolite membrane formed on said support, wherein said zeolite membrane is of SAT-type zeolite, and in an X-ray diffraction pattern obtained by X-ray irradiation to said zeolite membrane, a peak intensity around 2θ=13.9° is 1.5 times or more a peak intensity around 2θ=8.5°. 2. The zeolite membrane complex according to claim 1 , wherein in said X-ray diffraction pattern, the peak intensity around 2θ=13.9° is two times or more the peak intensity around 2θ=8.5°. 3. The zeolite membrane complex according to claim 1 , wherein said support is porous. 4. The zeolite membrane complex according to claim 1 , wherein said support is an alumina sintered compact or a mullite sintered compact. 5. A method of producing a zeolite membrane complex, comprising: a) synthesizing SAT-type zeolite by hydrothermal synthesis and obtaining seed crystals from said zeolite; b) depositing said seed crystals on a support; c) immersing said support in a starting material solution having a pH greater than or equal to 5 and less than or equal to 9 prepared by mixing an aluminum source and a phosphorus source while maintaining a pH greater than or equal to 4 at all times after mixing the aluminum source and phosphorous source, and growing SAT-type zeolite from said seed crystals by hydrothermal synthesis to form a zeolite membrane on said support; and d) removing a structure-directing agent from said zeolite membrane. 6. The method of producing a zeolite membrane complex, according to claim 5 , wherein in an X-ray diffraction pattern obtained by X-ray irradiation to said zeolite membrane, a peak intensity around 2θ=13.9° is 1.5 times or more a peak intensity around 2θ=8.5°. 7. The method of producing a zeolite membrane complex, according to claim 5 , wherein in said operation a) or c), aluminum alkoxide or an alumina sol is used as the aluminum source in the hydrothermal synthesis.
Assignees
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Classifications
by controlled crystallisation, e,.g. hydrothermal growth · CPC title
- B01D53/228Primary
characterised by specific membranes · CPC title
characterised by their properties · CPC title
Carbon dioxide · CPC title
by selective elimination of components, e.g. by leaching · CPC title
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- What does patent US11534725B2 cover?
- A zeolite membrane complex comprises: a support; and a zeolite membrane formed on the support. The membrane is of SAT-type zeolite, and in an X-ray diffraction pattern obtained by X-ray irradiation to the zeolite membrane, a peak intensity around 2θ=13.9° is 1.5 times or more a peak intensity around 2θ=8.5°.
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01D53/228. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 27 2022 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).