Zeolite membrane composite, method of producing zeolite membrane composite, and separation method
AssigneeNGK Insulators, Ltd.
InventorsMakiko Ichikawa, Kenji Yajima, Makoto Miyahara, Naoto Kinoshita
Life of this patent
Estimating the term…
Abstract
A zeolite membrane composite includes a porous support and a zeolite membrane formed on the support. The zeolite membrane includes a low-density layer that covers the support, and a compact layer that covers the low-density layer. The compact layer has a higher content of a zeolite crystalline phase than the low-density layer. By in this way forming the compact layer on the low-density layer that covers the support, the thin compact layer with no defects can be formed more easily than in the case where a compact layer is formed directly on a support.
Claims14
A zeolite membrane composite comprising:
- a porous support;
- and
- a zeolite membrane formed on said support;
- wherein said zeolite membrane includes:
- a low-density layer that covers said support;
- and
- a compact layer that covers said low-density layer and has a higher content of a zeolite crystalline phase than said low-density layer;
- wherein said compact layer contains zeolite crystals with an average particle diameter greater than an average particle diameter of zeolite crystals contained in said low-density layer.
Dependencies are inferred from the claim text.