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US 11,534,725 B2Granted
Zeolite membrane complex and method of producing zeolite membrane complex
AssigneeNGK Insulators, Ltd.
InventorsKenichi Noda, Aya Miura, Ryotaro Yoshimura, Takeshi Hagio
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Abstract
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°.
Claims7
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 more elements
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.
2 more elements
Dependencies are inferred from the claim text.