JPH01298078A - Porous ceramic body - Google Patents
Porous ceramic bodyInfo
- Publication number
- JPH01298078A JPH01298078A JP63129657A JP12965788A JPH01298078A JP H01298078 A JPH01298078 A JP H01298078A JP 63129657 A JP63129657 A JP 63129657A JP 12965788 A JP12965788 A JP 12965788A JP H01298078 A JPH01298078 A JP H01298078A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- porous body
- ceramic porous
- cordierite
- pore diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は酸化触媒の担体などとして用いるセラミック多
孔体に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ceramic porous body used as a carrier for an oxidation catalyst.
従来の技術
従来のこの種のセラミック多孔体はコージェライト、ム
ライトを主成分とするものであった。BACKGROUND OF THE INVENTION Conventional ceramic porous bodies of this type have cordierite and mullite as their main components.
発明が解決しようとする課題
しかしながら上記のようなセラミック多孔体は、８００
℃〜１０００℃の高温と室温間で急熱急冷を繰返すとク
ラックが発生し破損するという課題を有していた。Problems to be Solved by the Invention However, the ceramic porous body as described above is
There has been a problem in that cracks occur and breakage occurs when rapid heating and cooling are repeated between a high temperature of 1000°C and room temperature.
本発明はかかる従来の課題を解消するもので、耐熱ｆｉ
ｌ性の高いセラミック多孔体を提供することを目的とす
るものである。The present invention solves these conventional problems, and the heat-resistant fi
The purpose of this invention is to provide a ceramic porous body with high lability.
ＨｒＩを解決するための手段
上記の課題を解決するために本発明のセラミック多孔体
は、コージェライト（２ＭＣ７０・２ＡＮ２０３ ・
５８ ｉ ０２ ） ７０〜９０ｆｆｉｆｆｉ％ト、β
−ユークリプタイト（Ｌｉ２０・Ａｌ３０３ ・２Ｓｉ
Ｏ２）、β−スポジュメン（Ｌｉ２０・Ａｌ２Ｏ３・４
ＳｉＯ２）の群から選んだリチウムアルミノシリケート
１０〜３０重量％を主成分とする、気孔率４０〜６０％
、平均細孔径１〜２０μｍのものである。Means for Solving HrI In order to solve the above problems, the ceramic porous body of the present invention is made of cordierite (2MC70, 2AN203,
58 i 02 ) 70-90ffiffi%, β
-Eucryptite (Li20・Al303・2Si
O2), β-spodumene (Li20・Al2O3・4
The main component is 10 to 30% by weight of lithium aluminosilicate selected from the group of SiO2), and the porosity is 40 to 60%.
, with an average pore diameter of 1 to 20 μm.
本発明のセラミック多孔体においては、コージェライト
７０〜９０重量％とリチウムアルミノシリケート１０〜
３０重量％とを配合したことにより熱膨脹係数がコージ
ェライト単独のものに比べて低いが、リチウムアル、ミ
ノシリケートが１０重量％未満ではその効果が得られず
、３０重量％を超えるとセラミック多孔体の耐熱温度が
低下し８００℃以上の温度で機械的性能が著しく低下す
る。気孔率は、４０〜６０％とすることが耐熱Ｗｉ撃性
、機械的性能などの点から必要である。また平均細孔径
を１〜２０μｍと小さくしたことにより熱膨張係数の低
いことと相まって、セラミック多孔体の耐熱衝撃性が極
めて良好である。平均細孔径が２０μｍより大きいと十
分すぐれた耐熱衝撃性を有するものを得ることができず
、１μｍ未満においても耐熱衝撃性のすぐれたものを得
ることができない。The ceramic porous body of the present invention contains 70 to 90% by weight of cordierite and 10 to 90% by weight of lithium aluminosilicate.
30% by weight, the coefficient of thermal expansion is lower than that of cordierite alone, but if the content of lithium aluminum and minosilicate is less than 10% by weight, this effect cannot be obtained, and if it exceeds 30% by weight, the ceramic porous body The heat resistance temperature of the steel decreases, and the mechanical performance significantly decreases at temperatures of 800°C or higher. The porosity is required to be 40 to 60% from the viewpoint of heat resistance, mechanical performance, etc. Moreover, the average pore diameter is reduced to 1 to 20 μm, which, together with the low coefficient of thermal expansion, gives the ceramic porous body extremely good thermal shock resistance. If the average pore diameter is larger than 20 μm, it will not be possible to obtain a material with sufficiently excellent thermal shock resistance, and if the average pore diameter is less than 1 μm, it will not be possible to obtain a material with excellent thermal shock resistance.
作用
本発明は上記した構成によって、セラミック多孔体の熱
膨張係数がコージェライト単独より低くなることと、平
均細孔径を小さくしたことにより、耐熱衝撃性が向上す
る。Function The present invention improves thermal shock resistance by making the ceramic porous body have a lower coefficient of thermal expansion than cordierite alone and by reducing the average pore diameter due to the above-described configuration.
実施例
実施例１゜
平均粒径５００μｍのコージェライト粉末８５重量％、
平均粒径１００μｍのβ−ユークリプタイト（Ｌ １２
Ｃ１／ｌ！２０３ ・２８１０２）粉末１０重量％、
平均粒径１０μｍの炭素粉末５重量％からなる原料を混
合し、ハニカム状に成形し、１２８０〜１３００℃で焼
成して直径１２０ＩＩＩａｑ厚さ１０．、．１．７Ｘ４
Ｍの角状孔９４０個を有するセラミック多孔体を作製し
た。上記温度で焼成すると炭素粉末は消失し、最終的に
はコージェライト８９重量％、β−ユークリプタイト１
１重量％のセラミック多孔体となった。このセラミック
多孔体の熱膨張係数は０．６Ｘ １０−’ ／’Ｃ（４
０〜８００℃）、気孔率は５６％、平均細孔径は５．ｃ
ｚｍ、抗折強度ハ３００Ｋｆｌ／ｃｘｌ （室温）であ
り、従来のコージェライト磁器と比較すると、熱膨張係
数は０．７Ｘ １０−６ ／ ”Ｃ低く、平均細孔径は
。Examples Example 1゜85% by weight of cordierite powder with an average particle size of 500 μm,
β-eucryptite (L 12
C1/l! 203 ・28102) Powder 10% by weight,
Raw materials consisting of 5% by weight of carbon powder with an average particle size of 10 μm are mixed, formed into a honeycomb shape, and fired at 1280 to 1300°C to form a honeycomb with a diameter of 120IIIaq and a thickness of 10. ,．． 1.7X4
A ceramic porous body having 940 M square holes was produced. When fired at the above temperature, the carbon powder disappears, and the final result is 89% by weight of cordierite and 1% β-eucryptite.
A ceramic porous body containing 1% by weight was obtained. The coefficient of thermal expansion of this ceramic porous body is 0.6×10-'/'C(4
0 to 800°C), porosity is 56%, and average pore diameter is 5. c.
zm, bending strength is 300Kfl/cxl (room temperature), and compared to conventional cordierite porcelain, the coefficient of thermal expansion is 0.7X 10-6/''C lower, and the average pore diameter is.
４３０μｍ小さく、抗折強度は２５０Ｋｇ／ｃｔｊ高く
なった。このため本実施例のハニカム状セラミック多孔
体は、９００℃から水中に急冷する操作を５０回繰返し
ても破損することがなく耐熱衝撃性の高いものであった
。It was 430 μm smaller and the bending strength was 250 Kg/ctj higher. Therefore, the honeycomb-shaped ceramic porous body of this example did not break even after the operation of rapidly cooling it from 900° C. into water was repeated 50 times, and it had high thermal shock resistance.
実施例２゜
平均粒径５００μｍのコージェライト粉末７５重畳％、
β−スポジュメン（Ｌｉ２０・Ａρ２０３ ・４ＳｉＯ
２）２０重量％、平均粒径１０μｍの炭素粉末５重量％
からなる原料を混合し、ハニカム状に成形し、１３００
〜１３２０℃で焼成し、実施例１の場合と同一寸法のハ
ニカム状セラミック多孔体を作製した。焼成後の前記セ
ラミック多孔体の組成はコージェライト７９重量％、β
−スポジュメン２１重量％であった。このセラミック多
孔体の熱膨張係数は０．９Ｘ １０（１℃（４０〜８０
０℃）、気孔率は５２％、平均細孔径は３μｍ１抗折強
度は３５０Ａ：ｇ／ＣＩ！（室温）であり、従来のコー
ジェライト磁器と比較すると、熱膨張係数は０．４Ｘ
１０’ ／’Ｃ低く、平均細孔径は４３２μｍ小さく、
抗折強度は３００ＰＣｇ／ｃｄ高くなった。このため本
実施例のハニカム状セラミック多孔体は９００℃から水
中に急冷する操作を５０回繰返しても破損することがな
く耐熱衝撃性の高いものであった。Example 2゜75% by weight of cordierite powder with an average particle size of 500 μm,
β-spodumene (Li20・Aρ203・4SiO
2) 20% by weight, 5% by weight of carbon powder with an average particle size of 10 μm
The raw materials consisting of are mixed, formed into a honeycomb shape,
A honeycomb-shaped ceramic porous body having the same dimensions as in Example 1 was produced by firing at ~1320°C. The composition of the ceramic porous body after firing is 79% by weight of cordierite, β
- Spodumene was 21% by weight. The coefficient of thermal expansion of this ceramic porous body is 0.9X 10 (1℃ (40~80℃)
0°C), porosity is 52%, average pore diameter is 3μm1, bending strength is 350A:g/CI! (room temperature), and compared to conventional cordierite porcelain, the coefficient of thermal expansion is 0.4X
10'/'C lower, the average pore diameter is 432 μm smaller,
The bending strength increased by 300 PCg/cd. Therefore, the honeycomb-shaped ceramic porous body of this example did not break even after repeating the operation of rapidly cooling it from 900° C. into water 50 times, and had high thermal shock resistance.
発明の効果
以上のように本発明のセラミック多孔体は、コージェラ
イト７０〜９０Φ吊％とリチウムアルミノシリケート１
０〜３０重量％とからなり、熱膨張係数が低く、かつ気
孔率４０〜６０％、平均細孔径１〜２０μｍであるので
、耐熱衝撃性が極めてすぐれていて、急熱急冷が繰返さ
れる酸イし触媒の担体などとして極めて有用である。Effects of the Invention As described above, the ceramic porous body of the present invention contains cordierite 70 to 90 Φ suspension% and lithium aluminosilicate 1
0 to 30% by weight, has a low coefficient of thermal expansion, a porosity of 40 to 60%, and an average pore diameter of 1 to 20 μm, so it has extremely excellent thermal shock resistance and is suitable for use in acidic environments that require repeated rapid heating and cooling. It is extremely useful as a carrier for catalysts.
代理人 森 本 義 弘Agent Hiroshi Mori Moto
Claims (1)
ＳｉＯ＿２）７０〜９０重量％と、β−ユークリプタイ
ト（Ｌｉ＿２Ｏ−Ａｌ＿２Ｏ＿３・ ２ＳｉＯ＿２）、β−スポジュメン（Ｌｉ＿２Ｏ・Ａｌ
＿２Ｏ＿３・４ＳｉＯ＿２）の群から選んだリチウムア
ルミノシリケート１０〜３０重量％を主成分とする、気
孔率４０〜６０％、平均細孔径１〜２０μｍのセラミッ
ク多孔体。[Claims] 1. Cordierite (2MgO.2Al_2O_3.5
SiO_2) 70 to 90% by weight, β-eucryptite (Li_2O-Al_2O_3.2SiO_2), β-spodumene (Li_2O.Al
A ceramic porous body having a porosity of 40 to 60% and an average pore diameter of 1 to 20 μm, the main component being 10 to 30% by weight of lithium aluminosilicate selected from the group of _2O_3.4SiO_2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63129657A JPH01298078A (en) | 1988-05-26 | 1988-05-26 | Porous ceramic body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63129657A JPH01298078A (en) | 1988-05-26 | 1988-05-26 | Porous ceramic body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01298078A true JPH01298078A (en) | 1989-12-01 |
Family
ID=15014926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63129657A Pending JPH01298078A (en) | 1988-05-26 | 1988-05-26 | Porous ceramic body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01298078A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009108330A1 (en) * | 2008-02-29 | 2009-09-03 | Corning Incorporated | Permeable material, articles made therefrom and method of manufacture |
| US20110130277A1 (en) * | 2009-11-30 | 2011-06-02 | Gregory Albert Merkel | Beta-Spodumene-Cordierite Composition, Article, and Method |
| JP2015174798A (en) * | 2014-03-14 | 2015-10-05 | 日本碍子株式会社 | Plugged honeycomb structure |
-
1988
- 1988-05-26 JP JP63129657A patent/JPH01298078A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009108330A1 (en) * | 2008-02-29 | 2009-09-03 | Corning Incorporated | Permeable material, articles made therefrom and method of manufacture |
| US20100326029A1 (en) * | 2008-02-29 | 2010-12-30 | Corning Incorporated | Permeable Material, Articles made therefrom and method of manufacture |
| CN102007087A (en) * | 2008-02-29 | 2011-04-06 | 康宁股份有限公司 | Permeable material, articles made therefrom and method of manufacture |
| JP2011513176A (en) * | 2008-02-29 | 2011-04-28 | コーニング インコーポレイテッド | Permeable material, article made of permeable material, and manufacturing method |
| US8425830B2 (en) | 2008-02-29 | 2013-04-23 | Corning Incorporated | Permeable material, articles made therefrom and method of manufacture |
| US20110130277A1 (en) * | 2009-11-30 | 2011-06-02 | Gregory Albert Merkel | Beta-Spodumene-Cordierite Composition, Article, and Method |
| US8389430B2 (en) * | 2009-11-30 | 2013-03-05 | Corning Incorporated | Beta-spodumene-cordierite composition, article, and method |
| US8741210B2 (en) | 2009-11-30 | 2014-06-03 | Corning Incorporated | Beta-spodumene-cordierite composition, article, and method |
| JP2015174798A (en) * | 2014-03-14 | 2015-10-05 | 日本碍子株式会社 | Plugged honeycomb structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6036364A (en) | Aluminum titanate-mullite ceramic body, converter means and diesel microparticle filter for wood stove burning chamber therewith | |
| JP2008543701A (en) | Geopolymer composite and structure formed therefrom | |
| WO2002070433A1 (en) | Honeycomb structure | |
| US5281462A (en) | Material, structure, filter and catalytic converter | |
| WO2002040424A1 (en) | Honeycomb structure and method for manufacture thereof | |
| JPH10174885A (en) | Cordierite honeycomb structure and manufacturing method thereof | |
| JPH013067A (en) | Manufacturing method of cordierite honeycomb structure | |
| JPH0582343B2 (en) | ||
| JPH01298078A (en) | Porous ceramic body | |
| JP2006521996A (en) | Low thermal expansion calcium aluminate molded product | |
| JP4455786B2 (en) | Method for producing porous material and method for producing hollow granules used therefor | |
| JP2008239401A (en) | Heat-resistant ceramic material | |
| JP2651170B2 (en) | Ceramics porous body | |
| JPH01297145A (en) | catalyst body | |
| JPH0463023B2 (en) | ||
| JPS6265988A (en) | Production of ceramic tool for baking ceramic | |
| US4751205A (en) | Thermally bonded fibrous product | |
| JPH0779935B2 (en) | Cordierite gas filter and manufacturing method thereof | |
| JP3065421B2 (en) | Cordierite composite material | |
| JPH02311360A (en) | Aluminum titanate sintered compact | |
| JPS61295283A (en) | Manufacture of low heat expansion ceramic porous body | |
| JPH0569065B2 (en) | ||
| JPH06172010A (en) | Insulation material and manufacturing method thereof | |
| JPH06191944A (en) | Sic refractory | |
| JPS6046981A (en) | Ceramic porous body |