JPS63293106A - Production of gold particle - Google Patents
Production of gold particleInfo
- Publication number
- JPS63293106A JPS63293106A JP12784987A JP12784987A JPS63293106A JP S63293106 A JPS63293106 A JP S63293106A JP 12784987 A JP12784987 A JP 12784987A JP 12784987 A JP12784987 A JP 12784987A JP S63293106 A JPS63293106 A JP S63293106A
- Authority
- JP
- Japan
- Prior art keywords
- gold
- iodide
- iodide salt
- alkali metal
- salt
- 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
- 239000002245 particle Substances 0.000 title claims abstract description 43
- 239000010931 gold Substances 0.000 title claims abstract description 26
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- GCZKMPJFYKFENV-UHFFFAOYSA-K triiodogold Chemical class I[Au](I)I GCZKMPJFYKFENV-UHFFFAOYSA-K 0.000 claims abstract description 27
- 229910001516 alkali metal iodide Inorganic materials 0.000 claims abstract description 14
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 claims abstract description 11
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 12
- 239000012266 salt solution Substances 0.000 claims 1
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 abstract description 18
- 238000009826 distribution Methods 0.000 abstract description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 13
- -1 alkali metal hydroxide salt Chemical class 0.000 abstract description 4
- ZHHGTDYVCLDHHV-UHFFFAOYSA-J potassium;gold(3+);tetraiodide Chemical compound [K+].[I-].[I-].[I-].[I-].[Au+3] ZHHGTDYVCLDHHV-UHFFFAOYSA-J 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910001511 metal iodide Inorganic materials 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 6
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 235000009518 sodium iodide Nutrition 0.000 description 2
- XZXYQEHISUMZAT-UHFFFAOYSA-N 2-[(2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound CC1=CC=C(O)C(CC=2C(=CC=C(C)C=2)O)=C1 XZXYQEHISUMZAT-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- UNMYWSMUMWPJLR-UHFFFAOYSA-L Calcium iodide Chemical compound [Ca+2].[I-].[I-] UNMYWSMUMWPJLR-UHFFFAOYSA-L 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 229940107816 ammonium iodide Drugs 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011575 calcium Chemical class 0.000 description 1
- 229910001640 calcium iodide Inorganic materials 0.000 description 1
- 229940046413 calcium iodide Drugs 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229940071870 hydroiodic acid Drugs 0.000 description 1
- 239000011777 magnesium Chemical class 0.000 description 1
- BLQJIBCZHWBKSL-UHFFFAOYSA-L magnesium iodide Chemical compound [Mg+2].[I-].[I-] BLQJIBCZHWBKSL-UHFFFAOYSA-L 0.000 description 1
- 229910001641 magnesium iodide Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- BHZOKUMUHVTPBX-UHFFFAOYSA-M sodium acetic acid acetate Chemical compound [Na+].CC(O)=O.CC([O-])=O BHZOKUMUHVTPBX-UHFFFAOYSA-M 0.000 description 1
- XHFLOLLMZOTPSM-UHFFFAOYSA-M sodium;hydrogen carbonate;hydrate Chemical compound [OH-].[Na+].OC(O)=O XHFLOLLMZOTPSM-UHFFFAOYSA-M 0.000 description 1
- LEAHFJQFYSDGGP-UHFFFAOYSA-K trisodium;dihydrogen phosphate;hydrogen phosphate Chemical compound [Na+].[Na+].[Na+].OP(O)([O-])=O.OP([O-])([O-])=O LEAHFJQFYSDGGP-UHFFFAOYSA-K 0.000 description 1
- WCTAGTRAWPDFQO-UHFFFAOYSA-K trisodium;hydrogen carbonate;carbonate Chemical compound [Na+].[Na+].[Na+].OC([O-])=O.[O-]C([O-])=O WCTAGTRAWPDFQO-UHFFFAOYSA-K 0.000 description 1
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は金粒子の製造方法に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for producing gold particles.
（従来技術とその問題点）
従来、金粒子の製造方法としては、塩化金酸溶液などに
ヒドラジン等の還元剤を用いて還元するが方法が用いら
れてきた。(Prior art and its problems) Conventionally, gold particles have been produced by reducing a chloroauric acid solution using a reducing agent such as hydrazine.
ところが、この方法では、還元された粒子同士が引き寄
せあうために、凝集してしまい粒度分布の幅の広い金粒
子しか得られないという欠点を有していた。However, this method has the disadvantage that the reduced particles attract each other and aggregate, resulting in gold particles having a wide particle size distribution.
（発明の目的）
本発明は上記の欠点を解消せんがためになされたもので
あり、粒度分布の幅の狭い、粒径コントロール可能な金
粒子の製造方法を提供せんとするものである。(Object of the Invention) The present invention has been made to solve the above-mentioned drawbacks, and it is an object of the present invention to provide a method for producing gold particles with a narrow particle size distribution and controllable particle size.
（問題点を解決するための手段）
本発明は、ヨウ化金塩水溶液又はヨウ化金塩とヨウ化ア
ルカリ金属塩との混合水溶液のｐＨを１２．５以下とし
それに水酸化アルカリ金属溶液を加え、ヨウ化金塩を分
解し金粒子を得ることを特徴とするものである。(Means for Solving the Problems) The present invention involves adjusting the pH of a gold iodide salt aqueous solution or a mixed aqueous solution of a gold iodide salt and an alkali metal iodide salt to 12.5 or less, and adding an alkali metal hydroxide solution thereto. , which is characterized by decomposing gold iodide salt to obtain gold particles.
ヨウ化アルカリ金属塩としてカリウムを用いた場合には
ヨウ化アルカリ金属塩とヨウ化金の混合水溶液中でヨウ
化金は次の次の式に従い溶解する〔（１）、（２）式〕
。When potassium is used as the alkali metal iodide salt, gold iodide dissolves in a mixed aqueous solution of the alkali metal iodide salt and gold iodide according to the following formula [Equations (1) and (2)]
.
Ａ ｕ Ｉ ３ ＋ Ｋ Ｉ Ｋ Ａ ｕ Ｉ
ａ −−−−−−−（１）ＫＡｕ １４ ＋ Ｋ
Ｉ Ｋ”＋ （Ａｕ ＋４） −−−−（２１これに
水酸化アルカリを加えｐ ＩＩを１２．５を超えるよう
にする事により、金属金が得られる。〔（３）式〕。A u I 3 + K I K A u I
a −−−−−−−(1) KAu 14 + K
I K"+ (Au +4) ----(21) Metallic gold is obtained by adding alkali hydroxide to this to make p II exceed 12.5. [Formula (3)].
２ ［Ａｕ １４） −＋ ６ＫＯＨ２ＡｕＩ＋５ Ｋ
Ｉ ＋ Ｋ Ｉ Ｏ３＋ ３ Ｈｚ Ｏ＋ ２１−
−・−（３）ヨウ化金塩水溶液又はヨウ化金塩とヨウ化
アルカリ金属塩の混合水溶液のｐＨを１２．５以下とし
た理由は、ｐＨ１２，５を超えると（３）式の反応がお
こってしまうため、反応前に金が析出し目的とする金粒
子が得られないからである。またこの水溶液のｐ Ｈは
、アルカリを加える都合上８〜１２位が好ましい。2 [Au 14) −+ 6KOH2AuI+5 K
I + K I O3+ 3 Hz O+ 21-
-・-(3) The reason why the pH of the gold iodide salt aqueous solution or the mixed aqueous solution of the gold iodide salt and the alkali metal iodide salt was set to 12.5 or less is that when the pH exceeds 12.5, the reaction of equation (3) occurs. This is because gold precipitates before the reaction and the desired gold particles cannot be obtained. Further, the pH of this aqueous solution is preferably 8 to 12 for convenience of adding an alkali.
ヨウ化金とヨウ化アルカリ金属塩の混合水溶液の場合ｐ
Ｈは、中性から弱酸性（ｐＨ３〜８）を示す。ｐＨを調
製する為には、酸としては、硫酸、硝酸、ヨウ化水素酸
、りん酸、酢酸、塩酸等があげられる。アルカリとして
は、水酸化ナトリウム、水酸化カリウム、アンモニア水
等があげられる。In the case of a mixed aqueous solution of gold iodide and alkali metal iodide salt, p
H indicates neutral to weak acidity (pH 3 to 8). In order to adjust the pH, examples of acids include sulfuric acid, nitric acid, hydroiodic acid, phosphoric acid, acetic acid, and hydrochloric acid. Examples of the alkali include sodium hydroxide, potassium hydroxide, and aqueous ammonia.
また反応前の極端なｐＨの変動を抑えるために、ｐ Ｈ
の緩衝作用を有する塩や、酸とアルカリとの組合せによ
るｐ Ｈ緩衝溶液またはｐ）（緩衝剤、例えばりん酸水
素２ナトリウムーりん酸２水素ナトリウム、炭酸水素ナ
トリウム−炭酸ナトリウム、炭酸ナトリウム−水酸化ナ
トリウム、酢酸−酢酸ナトリウム等によりｐ Ｈを調整
しても良い。In addition, in order to suppress extreme pH fluctuations before the reaction, the pH
salts with a buffering effect, pH buffer solutions or p) (buffers, such as disodium hydrogen phosphate-sodium dihydrogen phosphate, sodium bicarbonate-sodium carbonate, sodium carbonate-hydroxide) The pH may be adjusted using sodium, acetic acid-sodium acetate, or the like.
ヨウ化金塩をヨウ化金とヨウ化アルカリ金属塩の混合水
溶液とした理由は、前述（２）式に示した様にヨウ化金
も、ヨウ化金塩同様の挙動を示すからである。ヨウ化金
塩としてはヨウ化金カリウム、ヨウ化金ナトリウムの他
に、Ｍｇ塩、Ｃａ塩、ＮＨ，塩などがあげられる。The reason why the gold iodide salt is a mixed aqueous solution of gold iodide and an alkali metal iodide salt is that gold iodide also exhibits the same behavior as the gold iodide salt, as shown in equation (2) above. Examples of gold iodide include potassium gold iodide and sodium gold iodide, as well as Mg salt, Ca salt, NH salt, and the like.
ヨウ化アルカリ金属塩とヨウ化金の混合水溶液のヨウ化
アルカリ金属塩濃度を０．０５Ｍ／Ｊ〜７Ｍ／ｌとした
理由は、０．０５Ｍ／１未満では（１１式の反応を十分
おこすことができず、ＴＭ／ｌを超えると、ヨウ化アル
カリ金属の飽和濃度に近く結晶が出やすいこと、また反
応の結果が生じるヨウ素酸イオンが塩析効果により、ヨ
ウ素酸アルカリ金属となり金粒子とともに析出してしま
うからである。The reason why the alkali metal iodide concentration of the mixed aqueous solution of alkali metal iodide and gold iodide was set to 0.05 M/J to 7 M/l is that if it is less than 0.05 M/1, the reaction of equation 11 will not occur sufficiently. If TM/l is exceeded, the concentration of alkali metal iodide is close to the saturation concentration, and crystals are likely to form.Also, due to the salting-out effect, iodate ions that result from the reaction become alkali metal iodate and precipitate together with gold particles. This is because you end up doing it.
実施例においては、ヨウ化アルカリ金属塩としてヨウ化
カリウム、ヨウ化ナトリウムを用いたが、その他にヨウ
化カルシウムやヨウ化マグネシウム、ヨウ化アンモニウ
ム等でも良い。In the examples, potassium iodide and sodium iodide were used as the alkali metal iodide salt, but calcium iodide, magnesium iodide, ammonium iodide, etc. may also be used.
水酸化アルカリ金属溶液の濃度を、０．１〜６Ｎとした
理由は、０．１以下では反応の為に多量の水酸化アルカ
リ金属溶液を必要とし、６Ｎ以上では、金粒子が凝集し
易くなるからである。The reason why the concentration of the alkali metal hydroxide solution was set from 0.1 to 6N is that if it is less than 0.1, a large amount of alkali metal hydroxide solution is required for the reaction, and if it is more than 6N, the gold particles tend to aggregate. It is from.
反応温度をは１０℃未満では反応が遅（，１００°Ｃ超
えると析出した金粒子が凝集してしまうので、１０〜１
００℃の範囲が好ましい。また反応温度は変動すると、
金粒子の粒径のばらつきが太き（なるので、一定にした
方が好ましい。If the reaction temperature is less than 10°C, the reaction will be slow (if it exceeds 100°C, the precipitated gold particles will aggregate, so
A range of 00°C is preferred. Also, when the reaction temperature changes,
Since the particle size of the gold particles varies widely, it is preferable to keep them constant.
反応の終点のｐＨは２０℃では１２．５以上、８０℃で
は１２．０以上であれば良いが終点のｐ Ｉ（が低いと
歩留が悪くなるので、好ましくはＥ）Ｈ１３以上である
。The pH at the end point of the reaction may be at least 12.5 at 20°C and at least 12.0 at 80°C, but the pH at the end point is preferably at least 13 (E), since a low pI() will result in poor yield.
（実施例１）
１１当りヨウ化カリウム１．０Ｍ、ヨウ化金０．１Ｍを
含み０．０５Ｎの水酸化カリウム溶液でｐＨ１１，０に
調整した溶液５点各１００ｄを、３００−ビーカーにと
り、各々１０℃、３０℃、５０℃、７０℃、９０°Ｃで
温度を一定に保ちながら１．ＯＮの水酸化カリウム溶液
５０＋ｄと反応させた。得られた金粒子はろ過、洗浄し
て粒径分布測定、電子顕微鏡観察を行ったところ、第１
図の結果を得た。(Example 1) 100 d of each of 5 solutions containing 1.0 M of potassium iodide and 0.1 M of gold iodide and adjusted to pH 11.0 with a 0.05 N potassium hydroxide solution were placed in a 300-cm beaker, and each 1. While keeping the temperature constant at 10°C, 30°C, 50°C, 70°C, and 90°C. Reacted with 50+d of ON potassium hydroxide solution. The obtained gold particles were filtered, washed, measured for particle size distribution, and observed using an electron microscope.
We obtained the results shown in the figure.
（従来例）
１１当り塩化金酸０．１Ｍを含む溶液１００ｍｆに、１
、ＯＮのヒドラジン５０ａｄを３０℃で温度を一定に保
ちながら反応させた、得られた金粒子は、ろ過洗浄して
粒径分布測定、及び電子顕微鏡観察を行ったところ図１
の結果を得た。(Conventional Example) Add 1 to 100mf of a solution containing 0.1M of chloroauric acid per 11
, ON hydrazine 50ad was reacted at 30°C while keeping the temperature constant. The obtained gold particles were filtered and washed, and the particle size distribution was measured and observed with an electron microscope. Figure 1
I got the result.
実施例では温度条件によりその粒径がコントロールされ
、粒度分布も非常にシャープであることを示している。The examples show that the particle size is controlled by temperature conditions and the particle size distribution is also very sharp.
これに対し従来例では凝集により粒度分布が広かってし
まったことがわかる。On the other hand, it can be seen that in the conventional example, the particle size distribution became wide due to aggregation.
（実施例２）
ｔｚ当りヨウ化カリウム０．１Ｍ／ｌ、０．５Ｍ／ｌ、
１．０Ｍ／Ｉ！、３Ｍ／ｉ！、７Ｍ／ｊ！の溶液各１０
０ｍ１にヨウ化金０．０５Ｍを各々に加えた後、０．０
５Ｎの水酸化カリウム溶液でｐＨ１１，０とし、さらに
３０℃に保ちながら１．ＯＮの水酸化カリウム溶液５０
Ｍ４と反応させた。反応後ろ過洗浄して粒径分布測定及
び電子顕微鏡観察を行った結果を下記の表に示す。(Example 2) Potassium iodide per tz: 0.1 M/l, 0.5 M/l,
1.0M/I! , 3M/i! , 7M/j! 10 each solution of
After adding 0.05M of gold iodide to 0ml of each,
The pH was adjusted to 11.0 with 5N potassium hydroxide solution, and the temperature was further maintained at 30°C. ON potassium hydroxide solution 50
Reacted with M4. The results of particle size distribution measurement and electron microscopy observation after the reaction are shown in the table below.
ヨウ化カリウム濃度０．１Ｍ／１では粒度分布が他に比
べてやや広くなっているが０．５〜７．０ Ｍ／ｌでは
、シャープな粒度分布が得られた。At a potassium iodide concentration of 0.1 M/l, the particle size distribution was slightly wider than the others, but at a potassium iodide concentration of 0.5 to 7.0 M/l, a sharp particle size distribution was obtained.
（実施例３）
１１当りヨウ化ナトリウム１．０Ｍ、ヨウ化金０．５Ｍ
を含み０．０５Ｎの水酸化ナトリウム溶液でｐＨ１１，
０に調整した溶液１００−を５点とりそれぞれに、０．
２Ｍ／１．０．５Ｍ／１．１．ＯＭ／ｌ ３Ｍ／ｌ、６
Ｍ／Ｊの水酸化ナトリウム溶液を加え終点のｐＨを１３
にするよう３０℃で反応させた０反応終了後、濾過、洗
浄して、粒度分布測定を行った結果を第２図に示す。(Example 3) Sodium iodide 1.0M, gold iodide 0.5M per 11
pH 11 with 0.05N sodium hydroxide solution containing
Take 5 points of solution 100- adjusted to 0.
2M/1.0.5M/1.1. OM/l 3M/l, 6
Add M/J sodium hydroxide solution and adjust the final pH to 13.
After the reaction was completed at 30° C., the sample was filtered and washed, and the particle size distribution was measured. The results are shown in FIG.
水酸化カリウム濃度６．０Ｍ／ｌでも７．３μ〜１０．
５μの中に粒子の７０％が入るシャープな金粒子が得ら
れた。Even at a potassium hydroxide concentration of 6.0M/l, it is 7.3μ to 10.
Sharp gold particles containing 70% of the particles within 5μ were obtained.
（発明の効果）
以上の説明かられかるように本発明による金粒子の製造
方法は、従来法では得られなかった粒度分布の幅の狭い
微細な金粒子を、粒径をコントロールして製造できるの
で、従来の製造方法に比べ画期的なものといえる。(Effects of the Invention) As can be seen from the above explanation, the method for producing gold particles according to the present invention can produce fine gold particles with a narrow particle size distribution, which could not be obtained by conventional methods, by controlling the particle size. Therefore, it can be said to be revolutionary compared to conventional manufacturing methods.
第１図及び第２図は金粒子の粒度分布を測定した結果を
横軸に粒径、縦軸に累積パーセントを取って示したもの
である。
出願人 田中貴金属工業株式会社
第 １ 図
第２図FIGS. 1 and 2 show the results of measuring the particle size distribution of gold particles, with the horizontal axis representing particle diameter and the vertical axis representing cumulative percentage. Applicant Tanaka Kikinzoku Kogyo Co., Ltd. Figure 1 Figure 2
Claims (4)
リ金属塩と混合水溶液のｐIIを１２．５以下とし、それ
に水酸化アルカリ金属溶液を加え、ヨウ化金塩を分解し
金粒子を得ることを特徴とする金粒子の製造方法。(1) The pII of a gold iodide salt aqueous solution or a mixed aqueous solution of a gold iodide salt and an alkali metal iodide salt is set to 12.5 or less, and an alkali metal hydroxide solution is added thereto to decompose the gold iodide salt and produce gold particles. A method for producing gold particles characterized by obtaining.
化金の混合水溶液であることを特徴とする特許請求の範
囲第１項記載の方法。(2) The method according to claim 1, wherein the aqueous gold iodide salt solution is a mixed aqueous solution of an alkali metal iodide salt and gold iodide.
Ｍ／ｌであることを特徴とする特許請求の範囲第１項又
は第２項記載の方法。(3) Alkali metal iodide concentration is 0.05M/l to 7
3. The method according to claim 1 or 2, characterized in that M/l.
あることを特徴とする特許請求の範囲第１項〜第３項記
載の方法。(4) The method according to claims 1 to 3, wherein the concentration of the alkali metal hydroxide solution is 0.1 to 6N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12784987A JPS63293106A (en) | 1987-05-25 | 1987-05-25 | Production of gold particle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12784987A JPS63293106A (en) | 1987-05-25 | 1987-05-25 | Production of gold particle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63293106A true JPS63293106A (en) | 1988-11-30 |
Family
ID=14970188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12784987A Pending JPS63293106A (en) | 1987-05-25 | 1987-05-25 | Production of gold particle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63293106A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581301A (en) * | 2012-03-30 | 2012-07-18 | 吉林大学 | Method for preparing multi-metal nanoparticles by one-step coreduction |
-
1987
- 1987-05-25 JP JP12784987A patent/JPS63293106A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581301A (en) * | 2012-03-30 | 2012-07-18 | 吉林大学 | Method for preparing multi-metal nanoparticles by one-step coreduction |
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