GB1400758A - Process for electrolytically producing metallic silver powder - Google Patents
Process for electrolytically producing metallic silver powderInfo
- Publication number
- GB1400758A GB1400758A GB5735772A GB5735772A GB1400758A GB 1400758 A GB1400758 A GB 1400758A GB 5735772 A GB5735772 A GB 5735772A GB 5735772 A GB5735772 A GB 5735772A GB 1400758 A GB1400758 A GB 1400758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- powder
- electrolyte
- complexed
- electrolysis
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/04—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
- C07D301/08—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
- C07D301/10—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
- B01J37/348—Electrochemical processes, e.g. electrochemical deposition or anodisation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Toxicology (AREA)
- Electrolytic Production Of Metals (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Catalysts (AREA)
- Epoxy Compounds (AREA)
Abstract
1400758 Electrolytically producing silver powder SNAMPROGETTI SpA 12 Dec 1972 [28 Dec 1971] 57357/72 Heading C7B Ag is electrolytically deposited on a cathode by electrolysis of a solution containing cations of Ag complexed with ammonia and, during the electrolysis, the Ag is removed from the cathode as a powder as it is formed. The removal may be by brushes (3, 3') rotated by a motor (4) as illustrated in the Fig. (not shown). Alternatively, the removal may be by ultrasonic vibrations, jets of liquid under pressure or by vigorous stirring of the electrolyte. Porous Ag powder can be produced having particle sizes of 300 to 1500 Angstroms. the complexed Ag cations may be derived from silver nitrate, sulphate, acetate, halide, oxalate or ammoniacal silver hydroxides. A colloid such as carboxymethylcellulose may be added to the electrolyte to prevent agglomeration of the powder. The electrolyte may be circulated through a heat exchanger (6) by a peristaltic pump (5). Specified electrolyzing conditions are a temperature of 10-50‹C, a current density of 2-50 ma/cm<SP>2</SP> , an aqueous electrolyte made up from AgNO 3 , Na 2 B 4 O 7 NaOH, NH 4 OH and carboxymethylcellulose. In the Examples the cathodes employed are ( 1 and 3) silver plates, (2) a silver net, (4) a silver or stainless steel plate tightly coupled to a graphite plate to form a bi-polar electrode. The Ag produced may be deposited on ceramic material and used as catalyst in the conversion of ethylene to ethylene oxide.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT33010/71A IT944424B (en) | 1971-12-28 | 1971-12-28 | PROCEDURE FOR THE PREPARATION OF SILVER-BASED CATALYSTS |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1400758A true GB1400758A (en) | 1975-07-23 |
Family
ID=11236250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5735772A Expired GB1400758A (en) | 1971-12-28 | 1972-12-12 | Process for electrolytically producing metallic silver powder |
Country Status (23)
Country | Link |
---|---|
US (1) | US3843491A (en) |
JP (1) | JPS5511895B2 (en) |
AR (1) | AR196221A1 (en) |
AT (1) | AT333702B (en) |
AU (1) | AU476492B2 (en) |
BE (1) | BE792890A (en) |
BR (1) | BR7208712D0 (en) |
CA (1) | CA1028276A (en) |
CH (1) | CH556915A (en) |
CS (1) | CS162787B2 (en) |
DD (1) | DD103269A5 (en) |
DE (1) | DE2263883C3 (en) |
ES (1) | ES410294A1 (en) |
FR (1) | FR2186541B1 (en) |
GB (1) | GB1400758A (en) |
HU (1) | HU165610B (en) |
IT (1) | IT944424B (en) |
LU (1) | LU66759A1 (en) |
NL (1) | NL7217691A (en) |
RO (1) | RO58869A (en) |
TR (1) | TR17434A (en) |
YU (1) | YU36103B (en) |
ZA (1) | ZA727973B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2715856A1 (en) * | 1977-04-06 | 1978-10-19 | Duval Corp | Recovery of particulate crystalline product during electrolysis - using agitators to sweep product from cathodes onto conveyor |
GB2248630A (en) * | 1990-09-21 | 1992-04-15 | Doryokuro Kakunenryo | Electrolytic recovery of palladium from solution eg. radioactive waste |
WO1999009234A2 (en) * | 1997-08-15 | 1999-02-25 | Sachem, Inc. | Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator, a catalytic film, methods of making the catalytic film, and electrosynthesis of compounds using the catalytic film |
US6024855A (en) * | 1997-08-15 | 2000-02-15 | Sachem, Inc. | Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator |
RU2558325C1 (en) * | 2014-06-17 | 2015-07-27 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | Electrolytic production of fine dispersed silver powders |
DE102014204372A1 (en) | 2014-03-11 | 2015-09-17 | Bayer Materialscience Ag | Process for the preparation of catalytically active powders of metallic silver or of mixtures of metallic silver with silver oxide for the production of gas diffusion electrodes |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4302319A (en) * | 1978-08-16 | 1981-11-24 | Katsyguri Ijybi | Continuous electrolytic treatment of circulating washings in the plating process and an apparatus therefor |
NL8503090A (en) * | 1985-11-11 | 1987-06-01 | Harshaw Chemie Bv | METHOD FOR PREPARING MOUNTED CATALYST SYSTEMS |
US5413987A (en) * | 1994-01-24 | 1995-05-09 | Midwest Research Institute | Preparation of superconductor precursor powders |
US5462647A (en) * | 1994-09-09 | 1995-10-31 | Midwest Research Institute | Preparation of lead-zirconium-titanium film and powder by electrodeposition |
US5785837A (en) * | 1996-01-02 | 1998-07-28 | Midwest Research Institute | Preparation of transparent conductors ferroelectric memory materials and ferrites |
WO2001051685A2 (en) * | 2000-01-10 | 2001-07-19 | Michael John Sole | Removal of metals from solution |
CN101579889B (en) * | 2009-06-05 | 2010-10-13 | 黎永健 | Ceramic powder feeding device and feeding method thereof |
EP2573213B1 (en) * | 2011-09-23 | 2017-10-25 | Covestro Deutschland AG | Oxygen-consuming electrode and method for its production |
EP2573210B1 (en) * | 2011-09-23 | 2016-10-26 | Covestro Deutschland AG | Oxygen-consuming electrode and method for its production |
CN103060854A (en) * | 2013-01-11 | 2013-04-24 | 东南大学 | Method for electrochemical synthesis of colloidal silver solution |
CN104492428B (en) * | 2014-11-28 | 2016-09-14 | 东莞市莞信企业管理咨询有限公司 | A kind of Nano tube of zirconium dioxide of silver-doped or bismuth and its production and use |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB501278A (en) * | 1937-08-21 | 1939-02-21 | Bataafsche Petroleum | Process for manufacturing catalysts and for bringing about catalytic reactions therewith |
-
1971
- 1971-12-28 IT IT33010/71A patent/IT944424B/en active
-
1972
- 1972-11-09 AU AU48663/72A patent/AU476492B2/en not_active Expired
- 1972-11-10 ZA ZA727973A patent/ZA727973B/en unknown
- 1972-11-13 RO RO72798A patent/RO58869A/ro unknown
- 1972-12-06 CS CS8341A patent/CS162787B2/cs unknown
- 1972-12-08 BR BR8712/72A patent/BR7208712D0/en unknown
- 1972-12-08 FR FR7243694A patent/FR2186541B1/fr not_active Expired
- 1972-12-12 GB GB5735772A patent/GB1400758A/en not_active Expired
- 1972-12-12 CH CH1801072A patent/CH556915A/en not_active IP Right Cessation
- 1972-12-15 BE BE792890A patent/BE792890A/en unknown
- 1972-12-18 AR AR245706A patent/AR196221A1/en active
- 1972-12-21 ES ES410294A patent/ES410294A1/en not_active Expired
- 1972-12-26 TR TR17434A patent/TR17434A/en unknown
- 1972-12-27 US US00319060A patent/US3843491A/en not_active Expired - Lifetime
- 1972-12-27 LU LU66759A patent/LU66759A1/xx unknown
- 1972-12-27 YU YU3256/72A patent/YU36103B/en unknown
- 1972-12-27 HU HUSA2436A patent/HU165610B/hu unknown
- 1972-12-27 CA CA159,986A patent/CA1028276A/en not_active Expired
- 1972-12-27 NL NL7217691A patent/NL7217691A/xx not_active Application Discontinuation
- 1972-12-27 DD DD167922A patent/DD103269A5/xx unknown
- 1972-12-28 DE DE2263883A patent/DE2263883C3/en not_active Expired
- 1972-12-28 JP JP13035872A patent/JPS5511895B2/ja not_active Expired
- 1972-12-28 AT AT1110772A patent/AT333702B/en not_active IP Right Cessation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2715856A1 (en) * | 1977-04-06 | 1978-10-19 | Duval Corp | Recovery of particulate crystalline product during electrolysis - using agitators to sweep product from cathodes onto conveyor |
GB2248630A (en) * | 1990-09-21 | 1992-04-15 | Doryokuro Kakunenryo | Electrolytic recovery of palladium from solution eg. radioactive waste |
WO1999009234A2 (en) * | 1997-08-15 | 1999-02-25 | Sachem, Inc. | Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator, a catalytic film, methods of making the catalytic film, and electrosynthesis of compounds using the catalytic film |
WO1999009234A3 (en) * | 1997-08-15 | 1999-06-03 | Sachem Inc | Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator, a catalytic film, methods of making the catalytic film, and electrosynthesis of compounds using the catalytic film |
US6024855A (en) * | 1997-08-15 | 2000-02-15 | Sachem, Inc. | Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator |
DE102014204372A1 (en) | 2014-03-11 | 2015-09-17 | Bayer Materialscience Ag | Process for the preparation of catalytically active powders of metallic silver or of mixtures of metallic silver with silver oxide for the production of gas diffusion electrodes |
RU2558325C1 (en) * | 2014-06-17 | 2015-07-27 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" | Electrolytic production of fine dispersed silver powders |
Also Published As
Publication number | Publication date |
---|---|
FR2186541B1 (en) | 1976-01-30 |
DE2263883A1 (en) | 1973-07-19 |
JPS4873387A (en) | 1973-10-03 |
YU325672A (en) | 1981-04-30 |
AU476492B2 (en) | 1976-09-23 |
RO58869A (en) | 1975-11-15 |
TR17434A (en) | 1975-07-23 |
DE2263883B2 (en) | 1974-10-10 |
CA1028276A (en) | 1978-03-21 |
AR196221A1 (en) | 1973-12-10 |
JPS5511895B2 (en) | 1980-03-28 |
CH556915A (en) | 1974-12-13 |
CS162787B2 (en) | 1975-07-15 |
BE792890A (en) | 1973-03-30 |
FR2186541A1 (en) | 1974-01-11 |
IT944424B (en) | 1973-04-20 |
ZA727973B (en) | 1973-09-26 |
NL7217691A (en) | 1973-07-02 |
DD103269A5 (en) | 1974-01-12 |
AU4866372A (en) | 1974-05-09 |
DE2263883C3 (en) | 1975-05-28 |
BR7208712D0 (en) | 1973-09-20 |
YU36103B (en) | 1982-02-25 |
US3843491A (en) | 1974-10-22 |
ATA1110772A (en) | 1976-04-15 |
HU165610B (en) | 1974-09-28 |
ES410294A1 (en) | 1976-01-01 |
AT333702B (en) | 1976-12-10 |
LU66759A1 (en) | 1973-02-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |