Noritake Co., Ltd.

Chubu Electric Power Company, Inc.

Yasunori Ando

Shigeo Nagaya

Hisatomi Taguchi

Kiyoshi Komura

Balagopal N Nair

Seiji Yamada

Yosuke Takahashi

Keita Miyajima

Katsuki Kusakabe

Yasuhisa Hasegawa

Shigeharu Morooka

A method for manufacturing a composite ceramic body with occluding a plurality of pores that are open at its surface of a porous ceramic body, the method includes the steps of impregnating a polysilazane solution including polysilazane having a repetition structure of fundamental units of at least one of [&#x2014;Si(H)(CH)&#x2014;NH&#x2014;] and [&#x2014;Si(CH)&#x2014;NH&#x2014;], and a predetermined organic solvent, into the plurality of pores of the porous ceramic body, and heating the porous ceramic body to convert the polysilazane in the plurality of pores into ceramic material.

Composite ceramic body, method of manufacturing the same and ceramic filter assembly

The present invention provides methods for making a microporous ceramic material using a metal silicon powder and including a reaction sintering process of the silicon. A material for forming a microporous ceramic material used in these methods includes a metal silicon powder, a silicon nitride powder and/or a silicon carbide powder, and if desired, a yttrium oxide powder and/or an aluminum oxide powder. These methods can make a microporous ceramic material that can be used preferably as a gas or liquid filter, a catalyst carrier or a support of a gas separation membrane.

Microporous ceramic materials

Methods and apparatus are taught for selectively oxidizing carbon monoxide in a source of gas containing carbon monoxide and hydrogen. A gas containing carbon monoxide and hydrogen is fed into a membrane reactor () capable of selectively absorbing the carbon monoxide. Preferably, the reactor comprises a substantially defect-free zeolite membrane () having at one metal that acts as an oxidation catalyst. The zeolite membrane () may be supported on a porous ceramic support () and the average pore diameter is preferably between about 0.3 nm and about 1.0 nm. Moreover, the substantially defect-free zeolite membrane () preferably has a thickness between about 0.1 micron and about 50.0 microns. The at least one metal is preferably capable of selectively oxidizing the carbon monoxide and is preferably platinum. Preferably, the temperature of reactor housing is maintained at about 200-300&#xb0; C.

Zeolite membranes for selective oxidation of carbon monoxide in mixed hydrogen gas source

The present invention provides a method for making a microporous ceramic material and includes the steps of (a) preparing a starting material for firing comprising a nonoxide ceramic precursor containing silicon as an essential component; (b) heating the starting material for firing in an atmosphere containing at least 1 mol % of hydrogen so as to form microporous ceramic product; and (c) cooling the microporous ceramic product.

Methods for making microporous ceramic materials

Growing community of inventors

Nagoya, Japan

Yasunori Ando