JPS64211A - Production of fine gold particles - Google Patents
Production of fine gold particlesInfo
- Publication number
- JPS64211A JPS64211A JP15477787A JP15477787A JPS64211A JP S64211 A JPS64211 A JP S64211A JP 15477787 A JP15477787 A JP 15477787A JP 15477787 A JP15477787 A JP 15477787A JP S64211 A JPS64211 A JP S64211A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- particle size
- iodide
- alkali hydroxide
- gold
- 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
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
PURPOSE: To produce singly dispersed fine gold particles having a narrow particle size distribution by adding an anionic surfactant to an aq. soln. contg. iodoauric acid ions and by further adding alkali hydroxide to the aq. soln. to decompose gold iodide.
CONSTITUTION: An anionic surfactant such as 'SURFLON S111(R)' is added to an aq. soln. contg. iodoauric acid ions prepd. by dissolving gold iodide in an aq. potassium iodide soln. or by other method. Alkali hydroxide is then added to the aq. soln. to decompose gold iodide. The proper concn. of the alkali hydroxide is about 0.1W6N. The pref. reaction temp. is about 20W70°C and the particle size of formed particles can be controlled by changing the temp. condition. The reaction is terminated at ≥about 12.5, preferably ≥about 13 pH. Thus, singly dispersed fine gold particles of ≤several μm particle size are obtd.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154777A JPH01211A (en) | 1987-06-22 | Method for producing gold particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154777A JPH01211A (en) | 1987-06-22 | Method for producing gold particles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64211A true JPS64211A (en) | 1989-01-05 |
JPH01211A JPH01211A (en) | 1989-01-05 |
Family
ID=
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004049902A (en) * | 1999-01-22 | 2004-02-19 | Adachi Kogyo:Kk | Slide-proof cut scissors |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004049902A (en) * | 1999-01-22 | 2004-02-19 | Adachi Kogyo:Kk | Slide-proof cut scissors |
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