JPS64209A - Production of fine gold particles - Google Patents
Production of fine gold particlesInfo
- Publication number
- JPS64209A JPS64209A JP15477587A JP15477587A JPS64209A JP S64209 A JPS64209 A JP S64209A JP 15477587 A JP15477587 A JP 15477587A JP 15477587 A JP15477587 A JP 15477587A JP S64209 A JPS64209 A JP S64209A
- 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 amphoteric 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 amphoteric surfactant such as acrylic acid amine 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 |
---|---|---|---|
JP62-154775A JPH01209A (en) | 1987-06-22 | Method for producing gold particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-154775A JPH01209A (en) | 1987-06-22 | Method for producing gold particles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64209A true JPS64209A (en) | 1989-01-05 |
JPH01209A JPH01209A (en) | 1989-01-05 |
Family
ID=
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675128A (en) * | 1984-12-31 | 1987-06-23 | Henkel Kommanditgesellschaft Auf Aktien | Alkane sulfonates as viscosity regulators |
US4880569A (en) * | 1985-06-21 | 1989-11-14 | Lever Brothers Company | Concentrated liquid detergent composition containing anionic surfactants having non-terminal sulfonate groups |
CN1054780C (en) * | 1994-10-20 | 2000-07-26 | 中国科学院山西煤炭化学研究所 | Method of preparing coated superfine powder with metal surfactant by phase transfer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4675128A (en) * | 1984-12-31 | 1987-06-23 | Henkel Kommanditgesellschaft Auf Aktien | Alkane sulfonates as viscosity regulators |
US4880569A (en) * | 1985-06-21 | 1989-11-14 | Lever Brothers Company | Concentrated liquid detergent composition containing anionic surfactants having non-terminal sulfonate groups |
CN1054780C (en) * | 1994-10-20 | 2000-07-26 | 中国科学院山西煤炭化学研究所 | Method of preparing coated superfine powder with metal surfactant by phase transfer |
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