Support, zeolite membrane complex, method of producing zeolite membrane complex, and separation method
AssigneeNGK Insulators, Ltd.
InventorKenichi Noda
Life of this patent
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Abstract
A porous cylindrical support for use in supporting a zeolite membrane has a generally cylindrical inside surface having a central axis extending in the longitudinal direction and a generally cylindrical outside surface that surrounds the inside surface. A zeolite membrane is formed on the outside surface. A maximum value A and a minimum value B of a support thickness in a circumferential direction satisfy (A−B)/(A+B)≤0.3 in at least part of the support in the longitudinal direction, the support thickness being a radial distance between the inside surface and the outside surface. By reducing a variation in support thickness, it is possible to improve uniformity in the thickness of the zeolite membrane formed on the support.
Claims6
A zeolite membrane complex comprising:
- a porous cylindrical support comprising
- a generally cylindrical inside surface having a central axis extending in a longitudinal direction, and
- a generally cylindrical outside surface that surrounds said inside surface,
- wherein a maximum value A and a minimum value B of a support thickness in a circumferential direction satisfy (A−B)/(A+B)≤0.3 in at least part of the support in the longitudinal direction, the support thickness being a radial distance between said inside surface and said outside surface;
- and
- a zeolite membrane formed on said support.
Dependencies are inferred from the claim text.