JPH04342414A - Formation of zeolite crystal - Google Patents
Formation of zeolite crystalInfo
- Publication number
- JPH04342414A JPH04342414A JP4290291A JP4290291A JPH04342414A JP H04342414 A JPH04342414 A JP H04342414A JP 4290291 A JP4290291 A JP 4290291A JP 4290291 A JP4290291 A JP 4290291A JP H04342414 A JPH04342414 A JP H04342414A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- porous material
- gel
- zeolite
- immersed
- 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
- 239000013078 crystal Substances 0.000 title claims abstract description 18
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 15
- 239000010457 zeolite Substances 0.000 title claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 title 1
- 239000007864 aqueous solution Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 15
- 239000011148 porous material Substances 0.000 abstract description 12
- 229910001388 sodium aluminate Inorganic materials 0.000 abstract description 7
- 229910052911 sodium silicate Inorganic materials 0.000 abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 6
- 235000019795 sodium metasilicate Nutrition 0.000 abstract description 3
- 229910052663 cancrinite Inorganic materials 0.000 abstract description 2
- 229910052908 analcime Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000004115 Sodium Silicate Substances 0.000 description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ゼオライト結晶の生成
方法に関する。更に詳しくは、多孔質体上へのゼオライ
ト結晶の生成方法に関する。FIELD OF THE INVENTION The present invention relates to a method for producing zeolite crystals. More specifically, the present invention relates to a method for producing zeolite crystals on a porous body.
【０００２】0002
【従来の技術】ゼオライトの各種結晶は、その耐熱温度
が１０００℃以下のものが殆んどであり、従って焼結な
どの方法で基材上に接着、生成させることはできない。BACKGROUND OF THE INVENTION Most of the various types of zeolite crystals have a heat resistance temperature of 1000° C. or lower, and therefore cannot be bonded or formed on a substrate by methods such as sintering.
【０００３】また、基材が多孔質体の場合には、ゼオラ
イト粒子はミクロンオーダー迄しか生長しないため、バ
インダーを用いてゼオライト粒子を成形した上で、接着
剤により多孔質体上に接着すると、接着剤により多孔質
構造が埋まってしまい、多孔質体としての特性が損なわ
れるようになる。また、それの耐熱温度は、接着剤のそ
れによって左右されることになる。[0003] Furthermore, when the base material is porous, zeolite particles only grow to the micron order, so if the zeolite particles are formed using a binder and then bonded onto the porous material using an adhesive, The porous structure is filled with the adhesive, and the properties of the porous body are impaired. Also, its heat resistance temperature will depend on that of the adhesive.
【０００４】0004
【発明が解決しようとする課題】本発明の目的は、多孔
質体上にそれの特性を殆んど損なうことなく、ゼオライ
トの結晶を接着性良く生成させる方法を提供することに
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for forming zeolite crystals on a porous body with good adhesion without substantially impairing its properties.
【０００５】[0005]
【課題を解決するための手段】かかる本発明の目的は、
湿式法によりゼオライトを生成させる水溶液またはゲル
中に多孔質体を浸漬し、耐圧容器中で約１５０〜２００
℃に加熱し、多孔質体上へゼオライト結晶を生成させる
方法によって達成される。[Means for Solving the Problems] The purpose of the present invention is to
The porous body is immersed in an aqueous solution or gel that produces zeolite by a wet method, and the
This is achieved by heating the porous material to 0.degree. C. to form zeolite crystals on the porous material.
【０００６】従来から、合成ゼオライトの製造法として
乾式法および湿式法が知られており、湿式法の代表的な
例としては、アルミン酸ナトリウム溶液とけい酸ナトリ
ウム溶液とを混合し、生じたゲルを乾燥、粉砕、ふるい
分けして目的物を得る方法が挙げられる。[0006] Conventionally, dry methods and wet methods have been known as methods for producing synthetic zeolite.A typical example of the wet method is to mix a sodium aluminate solution and a sodium silicate solution and mix the resulting gel. Examples of methods include drying, crushing, and sieving to obtain the desired product.
【０００７】本発明方法においては、このような湿式法
合成ゼオライトの合成条件がそのまま方法の一部として
用いられる。即ち、それぞれ約０．２５〜０．５モル濃
度程度のアルミン酸ナトリウム水溶液とけい酸ナトリウ
ム水溶液とを、そのまま混合してゲルとしあるいは水酸
化ナトリウムの飽和水溶液と一緒に混合して水溶液とす
る調製がまず行われ、その中に浸漬可能な量の多孔質体
、例えばアルミナ、ジルコニア、チタニアなどの無機質
多孔質体を浸漬させ、加熱処理することが次に行われる
。In the method of the present invention, the conditions for synthesizing zeolite synthesized by the wet method are used as is as part of the method. That is, a sodium aluminate aqueous solution and a sodium silicate aqueous solution, each having a molar concentration of about 0.25 to 0.5 molar, can be mixed as they are to form a gel, or mixed together with a saturated aqueous solution of sodium hydroxide to form an aqueous solution. First, a porous body, for example, an inorganic porous body such as alumina, zirconia, titania, etc., is immersed therein in an amount that can be immersed therein, and then a heat treatment is performed.
【０００８】加熱処理は、耐圧容器中でゼオライトが生
成する条件、具体的には約１５０〜２００℃の温度に約
５〜２０時間程度加熱することにより行われる。このよ
うな加熱処理により、多孔質体上に柱状結晶のカンクリ
ナイト（水酸化ナトリウム水溶液を用いた場合）、球状
結晶のアナルサイム（水酸化ナトリウム水溶液を用いな
い場合）などの結晶が接着性良く生成する。[0008] The heat treatment is carried out under conditions such that zeolite is produced in a pressure-resistant container, specifically by heating at a temperature of about 150 to 200°C for about 5 to 20 hours. Through such heat treatment, crystals such as columnar crystals of canculinite (when using a sodium hydroxide aqueous solution) and spherical crystals of analcyme (when a sodium hydroxide aqueous solution is not used) are formed on the porous body with good adhesion. do.
【０００９】[0009]
【発明の効果】本発明方法により、多孔質体上にゼオラ
イトの結晶を接着性良く生成させることができる。この
ようなゼオライト結晶を接着、生成させた多孔質体は、
触媒、吸着剤などとして有効に使用することができる。According to the method of the present invention, zeolite crystals can be formed on a porous body with good adhesion. A porous body made by adhering and forming such zeolite crystals is
It can be effectively used as a catalyst, adsorbent, etc.
【００１０】0010
【実施例】次に、実施例について本発明を説明する。[Example] Next, the present invention will be explained with reference to an example.
【００１１】実施例１
アルミン酸ナトリウム（ＮａＡｌＯ２）３．２０９３ｇ
を水３６ｍｌに溶解させた水溶液、けい酸ナトリウム（
Ｎａ２ＳｉＯ３）の５０重量％溶液６．８６７４ｇを水
３６ｍｌに溶解させた水溶液および水酸化ナトリウムの
飽和水溶液１００ｍｌを混合して得られた水溶液中に、
アルミナ（平均孔径０．２μｍ）を浸漬し、耐圧容器中
で１８０℃、２０時間の熱処理を行った。Example 1 Sodium aluminate (NaAlO2) 3.2093g
An aqueous solution of sodium silicate (
In an aqueous solution obtained by mixing 6.8674 g of a 50% by weight solution of Na2SiO3) in 36 ml of water and 100 ml of a saturated aqueous solution of sodium hydroxide,
Alumina (average pore diameter: 0.2 μm) was immersed and heat treated at 180° C. for 20 hours in a pressure container.
【００１２】その結果、多孔質アルミナ上に、長さ約１
０〜２０μｍの柱状結晶が良好な接着性で生成した。こ
の結晶をＸ線回析装置により分析したところ、カンクリ
ナイトであることが確認された。As a result, on the porous alumina, the length of about 1
Columnar crystals of 0-20 μm were produced with good adhesion. When this crystal was analyzed using an X-ray diffraction device, it was confirmed that it was cancrinite.
【００１３】実施例２
アルミン酸ナトリウム３．２０９３ｇを水３６ｍｌに溶
解させた水溶液およびけい酸ナトリウムの５０重量％溶
液６．８６７４ｇを水３６ｍｌに溶解させた水溶液を混
合して得られたゲル中に、アルミナ（平均孔径１μｍ）
を浸漬し、耐圧容器中で１８０℃、２０時間の熱処理を
行った。Example 2 In a gel obtained by mixing an aqueous solution of 3.2093 g of sodium aluminate dissolved in 36 ml of water and an aqueous solution of 6.8674 g of a 50% by weight solution of sodium silicate dissolved in 36 ml of water, , alumina (average pore size 1 μm)
was immersed and heat treated at 180° C. for 20 hours in a pressure container.
【００１４】その結果、多孔質アルミナ上に、直径約２
０〜５０μｍの球状結晶が良好な接着性で得られた。こ
の結晶をＸ線回析装置により分析したところ、ホウフッ
石群のアナルサイムであることが確認された。As a result, on the porous alumina, a diameter of about 2
Spherical crystals of 0-50 μm were obtained with good adhesion. When this crystal was analyzed using an X-ray diffraction device, it was confirmed that it was analcyme of the borofluorite group.
Claims (1)
水溶液またはゲル中に多孔質体を浸漬し、耐圧容器中で
約１５０〜２００℃に加熱することを特徴とする多孔質
体上へのゼオライト結晶の生成方法。[Claim 1] Zeolite crystals are formed on a porous body by immersing the porous body in an aqueous solution or gel in which zeolite is produced by a wet method, and heating the porous body to about 150 to 200°C in a pressure vessel. Generation method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4290291A JPH04342414A (en) | 1991-02-15 | 1991-02-15 | Formation of zeolite crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4290291A JPH04342414A (en) | 1991-02-15 | 1991-02-15 | Formation of zeolite crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04342414A true JPH04342414A (en) | 1992-11-27 |
Family
ID=12648964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4290291A Pending JPH04342414A (en) | 1991-02-15 | 1991-02-15 | Formation of zeolite crystal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04342414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468500B1 (en) * | 1997-10-31 | 2002-10-22 | Kao Corporation | Aluminosilicate |
-
1991
- 1991-02-15 JP JP4290291A patent/JPH04342414A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468500B1 (en) * | 1997-10-31 | 2002-10-22 | Kao Corporation | Aluminosilicate |
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