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JPS63282122A - Alkali metal titanate - Google Patents

Alkali metal titanate

Info

Publication number
JPS63282122A
JPS63282122A JP11549487A JP11549487A JPS63282122A JP S63282122 A JPS63282122 A JP S63282122A JP 11549487 A JP11549487 A JP 11549487A JP 11549487 A JP11549487 A JP 11549487A JP S63282122 A JPS63282122 A JP S63282122A
Authority
JP
Japan
Prior art keywords
alkali metal
compound
titanate
metal titanate
fibrous
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.)
Granted
Application number
JP11549487A
Other languages
Japanese (ja)
Other versions
JPH0832558B2 (en
Inventor
Masahiko Shimada
昌彦 島田
Tadashi Endo
忠 遠藤
Tsugio Sato
次雄 佐藤
Hiroyuki Nagayama
永山 博之
Kihachiro Nishiuchi
西内 紀八郎
Masayoshi Suzue
鈴江 正義
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otsuka Chemical Co Ltd
Original Assignee
Otsuka Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Otsuka Chemical Co Ltd filed Critical Otsuka Chemical Co Ltd
Priority to JP11549487A priority Critical patent/JPH0832558B2/en
Publication of JPS63282122A publication Critical patent/JPS63282122A/en
Publication of JPH0832558B2 publication Critical patent/JPH0832558B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

PURPOSE:To manufacture alkali metal titanate useful for an intermediate of whiskers manufacturing which has excellent flexural strength, electrical insulating heat resistance, etc., by mixing a titanium source compound and an oxygen containing alkali metal compound at a specific molar ratio and calcining the mixture. CONSTITUTION:The titanium source compound (e.g., titanium oxide) and the oxygen containing alkali metal compound (e.g., potassium nitrate) are mixed at a specific molar ratio and calcined at about 600-1,100 deg.C to produce a novel alkali metal titanate which is indicated by the formula (wherein M represents an alkali metal atom such as Li, Na, K, Rb, Cs, etc.,). The alkali metal titanate thus produced is mixed with fibrous alkali metal dititanate, molded under pressure and thermally treated to obtain fibrous alkali metal tetratitanate. The alkali metal tetratitanate thus obtained is excellent in the flexural strength, the thermal stability, etc., and a broadly employed in the uses of plastic reinforcing material, catalyst carrier, etc,.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、新規なチタン酸アルカリ金属塩に関する。[Detailed description of the invention] Industrial applications The present invention relates to a novel alkali metal titanate salt.

発明の開示 繊維状チタン酸アルカリ金属塩は、高い曲げ強度等の機
械的性質に優れる他、高い電気的絶縁性、熱的乃至化学
的な安定性、負の熱伝導率一温度係数特性等の特徴を備
えた材料である。従って、繊維状チタン酸アルカリ金属
塩は、プラスチック強化材料、減摩材料、バッテリーの
隔膜、断熱用構造材料、濾過材料、吸着材料、触媒やそ
の担体、顔料等の用途に幅広く使用されている。
Disclosure of the Invention Fibrous alkali metal titanates have excellent mechanical properties such as high bending strength, as well as high electrical insulation, thermal and chemical stability, negative thermal conductivity and temperature coefficient properties, etc. It is a material with special characteristics. Therefore, fibrous alkali metal titanates are widely used in applications such as plastic reinforcing materials, anti-friction materials, battery diaphragms, thermal insulation structural materials, filtration materials, adsorption materials, catalysts and their supports, and pigments.

本発明のチタン酸アルカリ金属塩は、上記有用性を備え
た繊維状チタン酸アルカリ金属塩を製造するための中間
体として有用な化合物である。本発明のチタン酸アルカ
リ金属塩からの上記繊維状チタン酸アルカリ金属塩の製
造は、例えば後記参考例に示す如くして行ない得る。
The alkali metal titanate of the present invention is a compound useful as an intermediate for producing a fibrous alkali metal titanate having the above-mentioned usefulness. The production of the fibrous alkali metal titanate from the alkali metal titanate of the present invention can be carried out, for example, as shown in Reference Examples below.

本発明のチタン酸アルカリ金属塩は、例えば下記に示す
方法に従い製造される。即ち、チタン源化合物及び含酸
素アルカリ全屈化合物を混合し、約600〜約1100
’Cの温度で焼成することにより製造される。
The alkali metal titanate of the present invention is produced, for example, according to the method shown below. That is, a titanium source compound and an oxygen-containing alkaline compound are mixed, and the
It is produced by firing at a temperature of 'C.

ここでチタン源化合物としては、実質的にT!02を含
有している化合物である限り従来公知のものを広く使用
でき、具体的には酸化チタン、ルチル鉱石、水酸化チタ
ンウェットケーキ、含水チタニア等を例示できる。チタ
ン源化合物の粒子形状としては、なるべく微粒子が好ま
しい。例えば酸化チタンにおいては、アナターゼ型微粒
子が、またルチル鉱石においては、粒子を高速に衝突さ
せて粉砕した所謂“ジェット粉砕品″が好ましい。
Here, the titanium source compound is substantially T! A wide variety of conventionally known compounds can be used as long as they contain 02, and specific examples include titanium oxide, rutile ore, titanium hydroxide wet cake, and hydrated titania. The particle shape of the titanium source compound is preferably fine particles. For example, for titanium oxide, anatase type fine particles are preferred, and for rutile ore, so-called "jet pulverized products" in which particles are pulverized by collision at high speed are preferred.

また粒径は、200〜425メツシユの範囲が適当でお
る。
The particle size is suitably in the range of 200 to 425 mesh.

また、含酸素アルカリ金属化合物としては、焼成時にM
2O(Mは前記に同じ)を生成する化合物でおる限り従
来公知のものを広く使用できるが、その中でも特にアル
カリ金属の硝酸塩が好ましい。
In addition, as an oxygen-containing alkali metal compound, M
A wide variety of conventionally known compounds can be used as long as they produce 2O (M is the same as above), but among them, alkali metal nitrates are particularly preferred.

具体的には、カリウム、ナトリウム、セシウム、ルビジ
ウム等の硝酸塩を好ましく例示できる。
Specifically, preferred examples include nitrates of potassium, sodium, cesium, rubidium, and the like.

チタン源化合物と含酸素アルカリ金属化合物との混合割
合としては、特に限定されるものではないが、TiO2
/M20のモル比で約0.8〜約1.6となるように両
者を混合するのが望ましい。
The mixing ratio of the titanium source compound and the oxygen-containing alkali metal compound is not particularly limited, but TiO2
It is desirable to mix the two so that the molar ratio of /M20 is about 0.8 to about 1.6.

本発明では、まずチタン源化合物と含酸素アルカリ金属
化合物とを所定の割合で混合し、この混合物を通常約6
00〜約1100’C1好ましくは約850〜約100
0℃の温度で、通常2〜20時間程時間酸するのがよい
。斯くして本発明のチタン酸アルカリ金属塩が製造され
る。
In the present invention, first, a titanium source compound and an oxygen-containing alkali metal compound are mixed in a predetermined ratio, and this mixture is usually
00 to about 1100'C1 preferably about 850 to about 100
It is best to acidify at a temperature of 0°C for usually about 2 to 20 hours. In this way, the alkali metal titanate salt of the present invention is produced.

X−一厘−−ヨ 以下に実施例及び参考例を掲げて本発明をより一層明ら
かにする。
Examples and Reference Examples are given below to further clarify the present invention.

実施例 市販の酸化チタン(アナターゼ型)及び硝酸カリウムを
モル比で2:3となるように計量し、十分に混合した後
に白金製ルツボ中に充填し、加熱炉中で1000’Cで
30分間焼成反応を行なった。
Example: Commercially available titanium oxide (anatase type) and potassium nitrate were weighed at a molar ratio of 2:3, mixed thoroughly, and then filled into a platinum crucible and fired at 1000'C in a heating furnace for 30 minutes. The reaction was carried out.

得られた反応生成物は、赤褐色を呈していた。The obtained reaction product had a reddish-brown color.

得られた反応生成物をXRD (X−Ray[) 1f
fraction>分析を行なった結果、該生成物は、
従来知られているニチタン酸カリウム及び四チタン酸カ
リウムとは全く異なる回折パターンを示しく第1図)、
また該生成物が単なる混合物から得られるものでないこ
とも下記第1表に示す回折データより明らかとなり、従
って得られる生成物は、文献未記載の新規化合物である
ことが判明した。
The obtained reaction product was subjected to XRD (X-Ray[) 1f
As a result of analysis, the product was
(Figure 1) shows a completely different diffraction pattern from the conventionally known potassium nititanate and potassium tetratitanate.
Furthermore, it has become clear from the diffraction data shown in Table 1 below that the product is not obtained from a simple mixture, and it has therefore been found that the obtained product is a new compound that has not been described in any literature.

Kを原子吸光法、TiをH2O2比色分析法にて分析し
た結果、得られる生成物の化学組成式は、KsT!tO
1+であることが確認された。
As a result of analyzing K by atomic absorption method and Ti by H2O2 colorimetric analysis, the chemical composition of the product obtained is KsT! tO
It was confirmed that it was 1+.

第  1′  表 (チタン酸カリウムの粉末X線回折データ)■:非常に
、 S:強い、 M:中間、 W:弱い参考例 市販の酸化チタン(アナターゼ型)及び硝酸カリウムを
モル比で1:1となるように計量し、十分に混合した後
に白金製ルツボ中に充填し、加熱炉中で1000’Cで
2時間焼成反応を行ない、白色の繊維状二チタン酸カリ
ウム結晶を得た。
Table 1' (Powder X-ray diffraction data of potassium titanate) ■: Very, S: Strong, M: Intermediate, W: Weak Reference example Commercially available titanium oxide (anatase type) and potassium nitrate in a molar ratio of 1:1 The mixture was weighed and thoroughly mixed, then filled into a platinum crucible, and fired in a heating furnace at 1000'C for 2 hours to obtain white fibrous potassium dititanate crystals.

上記実施例で得られたチタン酸カリウム塩と上記で得ら
れた繊維状二チタン酸カリウム結晶とを重量比で1:1
の割合に混合し、粗砕した後、水中に一夜浸漬させた。
The potassium titanate salt obtained in the above example and the fibrous potassium dititanate crystal obtained above were mixed in a weight ratio of 1:1.
After mixing and coarsely crushing the mixture, the mixture was immersed in water overnight.

濾過を行なった後、乾燥、粉砕して淡黄色の非晶質チタ
ン酸カリウムを得た。
After filtration, it was dried and ground to obtain pale yellow amorphous potassium titanate.

この非晶質チタン酸カリウムは、分析の結果、化学組成
がモル比でに/T i =2/4に相当するものでおっ
た。
As a result of analysis, this amorphous potassium titanate had a chemical composition corresponding to a molar ratio of /T i =2/4.

上記で得られる非晶質チタン酸カリウムを径5Qmmの
金型にて200MPaの圧力下で成形した。次に再び白
金製ルツボに入れ、加熱炉中で昇温速度を10℃/分と
し、1050℃で10時間保持し、繊維状四チタン酸カ
リウム多結晶体を得た。該多結晶体の相対密度は、68
%でおった。
The amorphous potassium titanate obtained above was molded in a mold with a diameter of 5 Qmm under a pressure of 200 MPa. Next, it was placed in a platinum crucible again, and the heating rate was set to 10° C./min in a heating furnace, and the temperature was maintained at 1050° C. for 10 hours to obtain a fibrous potassium tetratitanate polycrystal. The relative density of the polycrystal is 68
It was written in %.

斯くして得られる繊維状四チタン酸カリウム多結晶体は
、アスペクト比が大きく且つ曲げ強度、引張強度等の機
械的強度も大で、高い空孔率を有するものであった。ま
た上記方法に従えば、繊維状四チタン酸カリウム多結晶
体を再現性よく製造することができる。
The fibrous polycrystalline potassium tetratitanate thus obtained had a large aspect ratio, high mechanical strength such as bending strength and tensile strength, and a high porosity. Further, according to the above method, fibrous potassium tetratitanate polycrystals can be produced with good reproducibility.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、K2 T!t 09 、K2 T!20s及
びKs T ! 4 Ch 1のXRDパターンを示す
グラフである。 (以 上)
Figure 1 shows K2 T! t 09, K2 T! 20s and Ks T! 4 is a graph showing the XRD pattern of Ch 1. (that's all)

Claims (3)

【特許請求の範囲】[Claims] (1)一般式 M_6Ti_4O_1_1 (Mはアルカリ金属原子を示す) で表わされるチタン酸アルカリ金属塩。(1) General formula M_6Ti_4O_1_1 (M represents an alkali metal atom) Alkali metal titanate salt represented by. (2)Mがリチウム原子、ナトリウム原子、カリウム原
子、ルビジウム原子及びセシウム原子からなる群から選
ばれた少なくとも1種である特許請求の範囲第1項記載
のチタン酸アルカリ金属塩。
(2) The alkali metal titanate salt according to claim 1, wherein M is at least one member selected from the group consisting of a lithium atom, a sodium atom, a potassium atom, a rubidium atom, and a cesium atom.
(3)Mがカリウム原子である特許請求の範囲第1項記
載のチタン酸アルカリ金属塩。
(3) The alkali metal titanate salt according to claim 1, wherein M is a potassium atom.
JP11549487A 1987-05-11 1987-05-11 Alkali metal titanate Expired - Fee Related JPH0832558B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11549487A JPH0832558B2 (en) 1987-05-11 1987-05-11 Alkali metal titanate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11549487A JPH0832558B2 (en) 1987-05-11 1987-05-11 Alkali metal titanate

Publications (2)

Publication Number Publication Date
JPS63282122A true JPS63282122A (en) 1988-11-18
JPH0832558B2 JPH0832558B2 (en) 1996-03-29

Family

ID=14663898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11549487A Expired - Fee Related JPH0832558B2 (en) 1987-05-11 1987-05-11 Alkali metal titanate

Country Status (1)

Country Link
JP (1) JPH0832558B2 (en)

Also Published As

Publication number Publication date
JPH0832558B2 (en) 1996-03-29

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