JPH0797221A - Production of hexahydroxoplantic (iv) acid - Google Patents
Production of hexahydroxoplantic (iv) acidInfo
- Publication number
- JPH0797221A JPH0797221A JP26188393A JP26188393A JPH0797221A JP H0797221 A JPH0797221 A JP H0797221A JP 26188393 A JP26188393 A JP 26188393A JP 26188393 A JP26188393 A JP 26188393A JP H0797221 A JPH0797221 A JP H0797221A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- sodium
- hexahydroxoplantic
- hexahydroxoplatinum
- neutralization
- 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
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、触媒原料又は白金（Ｐ
ｔ）化合物の中間体等として用いられるヘキサヒドロキ
ソ白金（IV）酸(H2[Pt(OH)6]) の製造方法に関する。This invention relates to a catalyst raw material or platinum (P
t) A method for producing hexahydroxoplatinum (IV) acid (H 2 [Pt (OH) 6 ]) used as an intermediate of a compound or the like.
【０００２】[0002]
【従来の技術】従来、ヘキサヒドロキソ白金（IV）酸の
製造方法としては、ヘキサクロロ白金（IV）酸(H2[PtCl
6]) の水溶液に10％水酸化ナトリウム(NaOH)水溶液を過
剰に加え、長時間混合し煮沸してヘキサヒドロキソ白金
酸ナトリウム(Na2Pt(OH)6)液を生成した後、この液を酢
酸(CH3COOH) により中和し、生じた沈澱をよく水で洗っ
て空気中で乾燥する方法がとられている。ヘキサヒドロ
キソ白金酸ナトリウムの中和に酢酸を使用するのは、硫
酸(H2SO4) や塩酸(HCl) 等の無機の強酸を使うと、目的
物以外のものが生成する可能性があるためである。2. Description of the Related Art Conventionally, hexachloroplatinic (IV) acid (H 2 [PtCl 2
6 ]) was added with 10% sodium hydroxide (NaOH) solution in excess, mixed for a long time and boiled to form sodium hexahydroxoplatinate (Na 2 Pt (OH) 6 ) solution, and then this solution was added. It is a method of neutralizing with acetic acid (CH 3 COOH), washing the resulting precipitate well with water, and drying in air. Acetic acid is used for the neutralization of sodium hexahydroxoplatinate because strong inorganic acids such as sulfuric acid (H 2 SO 4 ) and hydrochloric acid (HCl) may produce substances other than the target substance. Is.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
ヘキサヒドロキソ白金（IV）酸の製造方法では、ヘキサ
ヒドロキソ白金酸ナトリウムの中和に酢酸を使用するの
で、廃液中に酢酸や酢酸ナトリウム(NaCH3COO)等の多量
の有機物が含まれ、ＣＯＤ（化学的酸素要求量）が高く
なり、そのまま捨てられない。このため、処理業者に引
き取ってもらうか、ＣＯＤを何らかの方法で落とす必要
があり、廃液処理コストが高くなる不具合がある。又、
酢酸自体が、硫酸や塩酸等よりも高価である不都合もあ
る。そこで、本発明は、廃液中に有機物が含まれないよ
うにし、廃液処理を中和処理のみで容易かつ安価になし
得るヘキサヒドロキソ白金（IV）酸の製造方法を提供す
ることを目的とする。However, in the conventional method for producing hexahydroxoplatinum (IV) acid, acetic acid is used to neutralize sodium hexahydroxoplatinate, so that acetic acid or sodium acetate (NaCH 3 It contains a large amount of organic substances such as COO), which increases COD (chemical oxygen demand) and cannot be discarded as it is. For this reason, it is necessary to ask the treatment company to pick up the COD or to drop the COD by some method, which causes a problem that the waste liquid treatment cost becomes high. or,
There is also a disadvantage that acetic acid itself is more expensive than sulfuric acid or hydrochloric acid. Therefore, it is an object of the present invention to provide a method for producing hexahydroxoplatinic (IV) acid, in which an organic substance is not contained in a waste liquid and the waste liquid treatment can be easily and inexpensively performed only by a neutralization treatment.
【０００４】[0004]
【課題を解決するための手段】前記課題を解決するた
め、本発明のヘキサヒドロキソ白金（IV）酸の製造方法
は、ヘキサヒドロキソ白金酸ナトリウムを中和してヘキ
サヒドロキソ白金（IV）酸を製造するに際し、ヘキサヒ
ドロキソ白金酸ナトリウムの中和を、陽イオン交換膜を
介した無機酸との接触によるイオン交換によって行うこ
とを特徴とする。In order to solve the above-mentioned problems, a method for producing hexahydroxoplatinum (IV) acid according to the present invention is to neutralize sodium hexahydroxoplatinate to produce hexahydroxoplatinate (IV) acid. In doing so, the sodium hexahydroxoplatinate is neutralized by ion exchange by contact with an inorganic acid through a cation exchange membrane.
【０００５】[0005]
【作用】上記手段においては、陽イオン交換膜は陽イオ
ンのみが通過可能であり、陰イオンは移動できないた
め、陰イオンが混合されることなく、無機酸のＨ+ とヘ
キサヒドロキソ白金酸ナトリウム液のＮａ+ のみの交換
によって中和される。Ｈ+ とＮａ+ の交換は、ヘキサヒ
ドロキソ白金酸ナトリウム液と酸のＨ+ 及びＮａ+ の濃
度差による拡散によって進行する。In the above means, only the cations can pass through the cation exchange membrane, and the anions cannot move. Therefore, the inorganic acid H + and the sodium hexahydroxoplatinate solution are not mixed with each other. Is neutralized by exchanging only Na + . H + and Na + in exchange proceeds by diffusion due to concentration difference of H + and Na + of hexahydroxoplatinum sodium solution and acid.
【０００６】[0006]
【実施例】以下、本発明の実施例について詳細に説明す
る。容積５ｌの容器に水酸化ナトリウム水溶液（水 3.6
ｌに水酸化ナトリウム 155ｇを溶解したもの) を入れ、
これにヘキサクロロ白金（IV）酸液 (白金： 200ｇ／
ｌ)406ｇと水 140mlを加え、オイルバスを使用して加熱
し煮沸状態を16時間保持して４ｌの混合液(Na2Pt(OH)6
＋NaOH＋NaC1) ４ｌを得た。得られた混合液を 300ml採
取し、図１に示すように、マグネットスターラー１上に
載置した容積２ｌのビーカー２に入れる一方、底壁の開
口部に陽イオン交換膜３を張設した容積１ｌのポリビー
カー４を前記ビーカー２内の混合液５中に浸漬し、かつ
ポリビーカー４内に１＋１硫酸６を 300ml入れ、混合液
５をマグネットスターラー１によって、又１＋１硫酸６
を撹拌機７によって25時間撹拌したところ、混合液５中
にヘキサヒドロキソ白金（IV）酸結晶の沈澱を生じた。
次いで、上記沈澱を含む混合液５をブフナー漏斗を用い
て濾過し、ヘキサヒドロキソ白金（IV）酸結晶と廃液に
分離した。廃液には、塩化ナトリウム(NaCl)おいび塩酸
が含まれるものの、有機物はなかった。EXAMPLES Examples of the present invention will be described in detail below. Sodium hydroxide aqueous solution (water 3.6
155g of sodium hydroxide dissolved in 1),
Hexachloroplatinic (IV) acid solution (platinum: 200 g /
l) 406 g and 140 ml of water were added, and the mixture was heated in an oil bath and kept in the boiled state for 16 hours, and 4 l of the mixed solution (Na 2 Pt (OH) 6
+ NaOH + NaC1) 4 l was obtained. 300 ml of the obtained mixed solution was sampled and placed in a beaker 2 having a volume of 2 l placed on a magnetic stirrer 1 while a cation exchange membrane 3 was stretched at the opening of the bottom wall as shown in FIG. 1 l of poly beaker 4 is immersed in the mixed solution 5 in the beaker 2, and 300 ml of 1 + 1 sulfuric acid 6 is put in the poly beaker 4, and the mixed solution 5 is further mixed with a magnetic stirrer 1 and 1 + 1 sulfuric acid 6
When the mixture was stirred for 25 hours by the stirrer 7, precipitation of hexahydroxoplatinum (IV) acid crystals was generated in the mixed solution 5.
Next, the mixed solution 5 containing the precipitate was filtered using a Buchner funnel to separate into hexahydroxoplatinum (IV) acid crystals and a waste solution. The waste liquid contained sodium chloride (NaCl) and hydrochloric acid, but there was no organic matter.
【０００７】比較のため、上述した実施例と同様にして
得た混合液(Na2Pt(OH)6 ＋NaOH＋NaC1) を２ｌ採取して
容積５ｌのビーカーに入れ、従来例に相当するように、
上記混合液に50重量％の酢酸水溶液をビュレットを使用
して滴下し、反応液のｐＨが5.0になる (中和する) ま
で液下を続けたところ、ヘキサヒドロキソ白金（IV）酸
結晶の沈澱を生じた。このときに要した酢酸水溶液の量
は、 140mlであった。次いで、上記沈澱を含む混合液を
ブフナー漏斗を用いて、濾過し、ヘキサヒドロキソ白金
（IV）酸結晶と廃液に分離し、かつヘキサヒドロキソ白
金（IV）酸結晶を水１ｌで洗浄し、この洗浄液を廃液に
加えた。廃液には、酢酸、酢酸ナトリウム及び塩化ナト
リウムが含まれ、そのＣＯＤは、 178mg／ｌであった。For comparison, 2 liters of a mixed solution (Na 2 Pt (OH) 6 + NaOH + NaC1) obtained in the same manner as in the above-mentioned embodiment was sampled and placed in a beaker having a volume of 5 liters, as in the conventional example.
A 50 wt% acetic acid aqueous solution was added dropwise to the above mixture using a buret, and the reaction liquid was kept under liquid until the pH became 5.0 (neutralized). As a result, precipitation of hexahydroxoplatinum (IV) acid crystals occurred. Occurred. The amount of acetic acid aqueous solution required at this time was 140 ml. Then, the mixed solution containing the above-mentioned precipitate is filtered using a Buchner funnel to separate into hexahydroxoplatinum (IV) acid crystals and a waste liquid, and the hexahydroxoplatinum (IV) acid crystals are washed with 1 l of water. Was added to the effluent. The waste liquid contained acetic acid, sodium acetate and sodium chloride, and its COD was 178 mg / l.
【０００８】なお、上記実施例においては、ヘキサヒド
ロキソ白金酸ナトリウムを中和するため、硫酸を使用す
る場合について述べたが、これに限定されるものではな
く、塩酸、硝酸（ＨＮＯ3)その他の無機酸を使用しても
同様であった。In the above examples, sulfuric acid was used to neutralize sodium hexahydroxoplatinate, but the present invention is not limited to this, and hydrochloric acid, nitric acid (HNO 3 ) and other substances are used. The same was true when an inorganic acid was used.
【０００９】[0009]
【発明の効果】以上説明したように、本発明のヘキサヒ
ドロキソ白金（IV）酸の製造方法によれば、陰イオンが
混合されることなく、無機酸のＨ+ とヘキサヒドロキソ
白金酸ナトリウム液のＮａ+ のみの交換によって中和さ
れるので、廃液中に有機物が含まれることがなく、廃液
処理を中和処理のみで容易かつ安価に済ますことができ
る。As described above, according to the method for producing hexahydroxoplatinum (IV) acid of the present invention, H + of inorganic acid and sodium hexahydroxoplatinate solution are mixed without anion mixing. Since it is neutralized by exchanging only Na + , the waste liquid does not contain organic substances, and the waste liquid can be treated easily and inexpensively only by neutralization.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明のヘキサヒドロキソ白金（IV）酸の製造
方法の一実施例における中和工程の概略を示す断面図で
ある。FIG. 1 is a cross-sectional view showing the outline of a neutralization step in an example of a method for producing hexahydroxoplatinum (IV) acid according to the present invention.
２ ビーカー ３ 陽イオン交換膜 ４ ポリビーカー ５ 混合液 ６ １＋１硫酸 2 Beaker 3 Cation exchange membrane 4 Polybeaker 5 Mixture 6 1 + 1 Sulfuric acid
Claims (1)
和してヘキサヒドロキソ白金（IV）酸を製造するに際
し、ヘキサヒドロキソ白金酸ナトリウムの中和を、陽イ
オン交換膜を介した無機酸との接触によるイオン交換に
よって行うことを特徴とするヘキサヒドロキソ白金（I
V）酸の製造方法。1. When neutralizing sodium hexahydroxoplatinate to produce hexahydroxoplatinate (IV) acid, the sodium hexahydroxoplatinate is neutralized by contact with an inorganic acid through a cation exchange membrane. Hexahydroxoplatinum (I
V) Method for producing acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26188393A JPH0797221A (en) | 1993-09-25 | 1993-09-25 | Production of hexahydroxoplantic (iv) acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26188393A JPH0797221A (en) | 1993-09-25 | 1993-09-25 | Production of hexahydroxoplantic (iv) acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0797221A true JPH0797221A (en) | 1995-04-11 |
Family
ID=17368093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26188393A Pending JPH0797221A (en) | 1993-09-25 | 1993-09-25 | Production of hexahydroxoplantic (iv) acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0797221A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1061145A1 (en) * | 1999-06-18 | 2000-12-20 | W.C. Heraeus GmbH & Co. KG | Process of producing high purity platinum from a hexachloroplatinate solution |
| EP1283274B1 (en) * | 2001-08-04 | 2007-10-31 | Umicore AG & Co. KG | low chlorine platinum and platinum alloy powders with increased specific surface area and process for the preparation thereof using a nitrate salt melt |
| US8178266B2 (en) | 2008-06-27 | 2012-05-15 | Ricoh Company, Ltd. | Electrophotographic photoreceptor, image forming apparatus using the electrophotographic photoreceptor, and method of producing electrophotographic photoreceptor |
| JP2013006719A (en) * | 2011-06-23 | 2013-01-10 | Hitachi-Ge Nuclear Energy Ltd | Method for producing platinum-attached oxide nanoparticle |
| US8568945B2 (en) | 2008-11-26 | 2013-10-29 | Ricoh Company, Ltd. | Electrophotographic photoreceptor, and image forming apparatus and process cartridge therefor using the photoreceptor |
| JP2014101240A (en) * | 2012-11-19 | 2014-06-05 | Hitachi-Ge Nuclear Energy Ltd | Platinum oxide colloid solution and manufacturing method and manufacturing apparatus of the same |
| US10504628B2 (en) | 2012-11-19 | 2019-12-10 | Hitachi-Ge Nuclear Energy, Ltd. | Platinum oxide colloidal solution, manufacturing method therefor, manufacture apparatus thereof, and method of injection noble metal of boiling water nuclear power plant |
-
1993
- 1993-09-25 JP JP26188393A patent/JPH0797221A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1061145A1 (en) * | 1999-06-18 | 2000-12-20 | W.C. Heraeus GmbH & Co. KG | Process of producing high purity platinum from a hexachloroplatinate solution |
| US6315811B1 (en) | 1999-06-18 | 2001-11-13 | W. C. Heraeus Gmbh & Co. Kg | Method for producing platinum |
| EP1283274B1 (en) * | 2001-08-04 | 2007-10-31 | Umicore AG & Co. KG | low chlorine platinum and platinum alloy powders with increased specific surface area and process for the preparation thereof using a nitrate salt melt |
| US8178266B2 (en) | 2008-06-27 | 2012-05-15 | Ricoh Company, Ltd. | Electrophotographic photoreceptor, image forming apparatus using the electrophotographic photoreceptor, and method of producing electrophotographic photoreceptor |
| US8568945B2 (en) | 2008-11-26 | 2013-10-29 | Ricoh Company, Ltd. | Electrophotographic photoreceptor, and image forming apparatus and process cartridge therefor using the photoreceptor |
| JP2013006719A (en) * | 2011-06-23 | 2013-01-10 | Hitachi-Ge Nuclear Energy Ltd | Method for producing platinum-attached oxide nanoparticle |
| JP2014101240A (en) * | 2012-11-19 | 2014-06-05 | Hitachi-Ge Nuclear Energy Ltd | Platinum oxide colloid solution and manufacturing method and manufacturing apparatus of the same |
| US10504628B2 (en) | 2012-11-19 | 2019-12-10 | Hitachi-Ge Nuclear Energy, Ltd. | Platinum oxide colloidal solution, manufacturing method therefor, manufacture apparatus thereof, and method of injection noble metal of boiling water nuclear power plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3816306A (en) | Copper etchant effluent treatment | |
| EP0003862B1 (en) | Process for the removal of heavy metals from aqueous liquids | |
| JPS5845909B2 (en) | Arsenic removal method from aqueous media | |
| JPH0627347B2 (en) | Method for producing silicon dioxide film | |
| DE69100619T2 (en) | METHOD AND DEVICE FOR THE PROCESSING OF LIQUID WASTE FROM THE PHOTOGRAPHIC DEVELOPMENT. | |
| JPH0797221A (en) | Production of hexahydroxoplantic (iv) acid | |
| WO2004110940A1 (en) | Wastewater treatment process | |
| US4172784A (en) | Process for the separation of cadmium (Cd++)-ions from sewage, waste water and aqueous solutions | |
| US3330771A (en) | Process for the removal of watersoluble ionic radioactive waste from water | |
| US3997439A (en) | Method of purification of waste water by treatment with zirconium salt | |
| CN1120893C (en) | Process for recovering Co and Mn Catalyst from oxidized dregs of terephthalic acid | |
| US3959132A (en) | Methods for removing fluoborates from aqueous media | |
| US5165905A (en) | Process for production of a highly pure silicic acid aqueous solution | |
| US6811704B2 (en) | Method for anion removal by forming chemical precipitation under an electric field and continuous process for anion removal | |
| JP2000126766A (en) | Treatment of tetraalkylammonium ion-containing liquid | |
| US2445669A (en) | Chemical process for production of potable water from nonpotable saline water | |
| JPS5941798B2 (en) | Wastewater treatment method | |
| CN108671881A (en) | A kind of wastewater treatment method of inorganic salts combination MAP chemical precipitation absorption method removal of ammonia and nitrogen | |
| US3043867A (en) | Method for the purification of aminocarboxylic acids | |
| JP2805692B2 (en) | Method for producing tetraammine palladium dihydroxide | |
| SU1549926A1 (en) | Method of removing organic compounds from waste water of aniline dye production | |
| SU1370077A1 (en) | Method of obtaining copper (i) chloride | |
| JPH0218906B2 (en) | ||
| JPS5854629B2 (en) | Method for treating waste liquid containing heavy metal complex salts | |
| KR920006715B1 (en) | Waste water treating method and agent thereof |