JPS64211A - Production of fine gold particles - Google Patents

Production of fine gold particles

Info

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
Application number
JP15477787A
Other languages
Japanese (ja)
Other versions
JPH01211A (en
Inventor
Motoyuki Nakanishi
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.)
Tanaka Kikinzoku Kogyo KK
Original Assignee
Tanaka Kikinzoku Kogyo KK
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 Tanaka Kikinzoku Kogyo KK filed Critical Tanaka Kikinzoku Kogyo KK
Priority to JP15477787A priority Critical patent/JPS64211A/en
Publication of JPH01211A publication Critical patent/JPH01211A/en
Publication of JPS64211A publication Critical patent/JPS64211A/en
Pending legal-status Critical Current

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
JP15477787A 1987-06-22 1987-06-22 Production of fine gold particles Pending JPS64211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15477787A JPS64211A (en) 1987-06-22 1987-06-22 Production of fine gold particles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15477787A JPS64211A (en) 1987-06-22 1987-06-22 Production of fine gold particles

Publications (2)

Publication Number Publication Date
JPH01211A JPH01211A (en) 1989-01-05
JPS64211A true JPS64211A (en) 1989-01-05

Family

ID=15591666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15477787A Pending JPS64211A (en) 1987-06-22 1987-06-22 Production of fine gold particles

Country Status (1)

Country Link
JP (1) JPS64211A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004049902A (en) * 1999-01-22 2004-02-19 Adachi Kogyo:Kk Slide-proof cut scissors

Similar Documents

Publication Publication Date Title
MY113299A (en) Improved titanium dioxide dispersibility.
CA2429412A1 (en) Production of fine-grained particles
GB1398831A (en) Activated red mud and its preparing method
UA42745C2 (en) Normal;heading 1;heading 2;PAROXETINE TABLETS AND PROCESS TO PREPARE THEM
PT86400A (en) Process for preparing aqueous solutions containing a mixture of hysozyme hydrochloride and dipotassium glycyrrhizate
DK0834314T3 (en) Granules containing pranlukast, method of making the granules, and method of reducing pranlukast's adhesiveness
BR0114684A (en) Method for making a dry alkali metal or ammonium salt of a carboxylic acid
CA2143337A1 (en) A method and mixture for treating electric arc furnace dust
JPS64209A (en) Production of fine gold particles
JPS64211A (en) Production of fine gold particles
JPS64210A (en) Production of fine gold particles
JPS64208A (en) Production of fine gold particles
DE3664929D1 (en) Process for treating rare-earth ores
GB1485067A (en) Effluent treatment process
JPS5767007A (en) Manufacture of granular sodium percarbonate with high solubility
GB1479581A (en) Method for producing alkali metal gold sulphites
ATE211768T1 (en) IMPROVED METHOD FOR PRODUCING L-ASPARAGIC ACID
JPS5551705A (en) Production of nitridosulfate
ES2002600A6 (en) Process for the production of high-purity magnesium oxide from minerals containing calcium and magnesium.
JPS57172923A (en) Production of polybutylene terephthalate polymer fine particle
EP0052253A3 (en) Process for winning metals from aqueous solutions
SU1637238A1 (en) Potassium-magnesium fertilizer and a method of its producing
SU976078A1 (en) Composition for destabilizing rock
JPS6475493A (en) Method for treating product having high boiling point in production of organohalosilane
MY113169A (en) Production of phytin and phytic acid from palm kernel pellet.