Monolithic substrate, monolithic separation membrane structure, and method for producing monolithic substrate

Patent metadata

Field	Value
Publication number	US-10449484-B2
Application number	US-201615260666-A
Country	US
Kind code	B2
Filing date	Sep 9, 2016
Priority date	Mar 28, 2014
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

A monolithic substrate comprises a porous base material body, a first support portion, a first cell seal portion, a second support portion, and a second cell seal portion. The base material body includes a plurality of cells respectively passing from a first end surface to a second end surface. The first support portion contains ceramics as an aggregate material, and is packed into the first end portion of a seal target cell. The first cell seal portion contains glass, and is disposed on an outer surface of the first support portion. The second support portion contains ceramics as an aggregate material, and is packed into the second end surface of the seal target cell. The second cell seal portion contains glass, and is disposed on an outer surface of the second support portion.

First claim

The invention claimed is:

1. A monolithic separation membrane structure comprising:
a porous base material body including a plurality of cells respectively passing from a first end surface to a second end surface;
a first support portion containing ceramics as an aggregate material, and packed into a first end portion of a predetermined cell of the plurality of cells;
a first cell seal portion containing glass, and disposed on an outer surface of the first support portion;
a second support portion containing ceramics as an aggregate material, and packed into a second end portion of the predetermined cell;
a second cell seal portion containing glass, and disposed on an outer surface of the second support portion;
and a separation membrane formed on each inner surface of a plurality of cells other than the predetermined cell,
wherein the predetermined cell is a cell having at least one of an inner defect and a distortion in a longitudinal direction.

2. A method of producing a monolithic separation membrane structure comprising:
forming a porous base material body including a plurality of cells respectively passing from a first end surface to a second end surface;
packing a first support portion containing ceramics as an aggregate material into a first end portion of a predetermined cell of the plurality of cells;
forming a first cell seal portion containing glass on an outer surface of the first support portion;
packing a second support portion containing ceramics as an aggregate material into a second end portion of the predetermined cell;
forming a second cell seal portion containing glass on an outer surface of the second support portion;
and a separation membrane formed on each inner surface of a plurality of cells other than the predetermined cell,
wherein the predetermined cell is a cell having at least one of an inner defect and a distortion in a longitudinal direction.

3. The monolithic separation membrane structure according to claim 1 , wherein the separation membrane is formed of an inorganic material selected from the group consisting of zeolite, carbon and silica.

Assignees

• Ngk Insulators Ltd

Inventors

• Miyahara Makoto
• Ichikawa Makiko
• Teranishi Makoto

Classifications

• C04B2235/5436

  micrometer sized, i.e. from 1 to 100 micron · CPC title

• B01D71/027

  Silicium oxide · CPC title

• C04B33/32

  Burning methods · CPC title

• C04B38/0012

  characterised by the material used for sealing or plugging (some of) the channels of the honeycombs · CPC title

• B01D71/04

  Glass · CPC title