GB1097384A - Process for producing finely divided metals - Google Patents

Process for producing finely divided metals

Info

Publication number
GB1097384A
GB1097384A GB37769/65A GB3776965A GB1097384A GB 1097384 A GB1097384 A GB 1097384A GB 37769/65 A GB37769/65 A GB 37769/65A GB 3776965 A GB3776965 A GB 3776965A GB 1097384 A GB1097384 A GB 1097384A
Authority
GB
United Kingdom
Prior art keywords
metal
aluminium hydroxide
acid
reducing agent
aluminium
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
Application number
GB37769/65A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering Co
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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1097384A publication Critical patent/GB1097384A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • 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
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • 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
    • B01J23/90—Regeneration or reactivation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

Powdered Group IB-VIIB, IVA, VA or VIII metal or a compound thereof is produced by adding a reducing agent to a solution comprising a salt of the metal and a soluble aluminium compound, the reducing agent simultaneously reducing the metal salt to the lower valence state or to the metal and precipitating aluminium hydroxide. The reducing agent is one that generates either an acid or a base and may be formaldehyde, hydrazine, hydroxylamine, methanol, acetaldehyde, hydroquinone, isopropanol, formic acid and diborane. Preferred aluminium compounds are the alkali metal aluminates. The aluminium hydroxide by-product may be removed from the precipitate by treatment with an acid or base. Alternatively, after the addition of aluminate the solution is titrated with acid until aluminium hydroxide starts to percipitate so that acid formed in the reduction step causes further precipitation of the aluminium hydroxide. The metal-aluminium hydroxide co-precipitate is dried, calcined and formed into electrodes. The production of powdered Pt., Pd and Pt-Ru is specifically referred to.
GB37769/65A 1964-09-23 1965-09-03 Process for producing finely divided metals Expired GB1097384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US398786A US3369886A (en) 1964-09-23 1964-09-23 Process of producing finely divided metals and alloys

Publications (1)

Publication Number Publication Date
GB1097384A true GB1097384A (en) 1968-01-03

Family

ID=23576812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37769/65A Expired GB1097384A (en) 1964-09-23 1965-09-03 Process for producing finely divided metals

Country Status (4)

Country Link
US (1) US3369886A (en)
DE (1) DE1483141A1 (en)
GB (1) GB1097384A (en)
NL (1) NL6512330A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1571322A (en) * 1967-12-18 1969-06-20
US3607426A (en) * 1967-12-26 1971-09-21 Gen Electric Fuel cell electrode
US3501287A (en) * 1968-07-31 1970-03-17 Mallory & Co Inc P R Metal-metal oxide compositions
DE1941931C3 (en) * 1968-08-26 1974-02-28 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Electrode with catalyst and process for their manufacture
US3663318A (en) * 1970-10-05 1972-05-16 Du Pont Process for making ferromagnetic metal powders
US3900342A (en) * 1971-05-03 1975-08-19 Siemens Ag Silver catalyst and a method of its manufacture
SE399869B (en) * 1973-08-09 1978-03-06 Montedison Spa TAKE REMOVAL OF MERCURY OR MERCURY SALTS FROM A LIQUID DRAIN BY TIOKARBAMIDE OR A HYDROXYL AMIN
US3994720A (en) * 1973-09-13 1976-11-30 Ethyl Corporation Metals extraction process
JPS5615124B2 (en) * 1973-11-16 1981-04-08
DE2434096C2 (en) * 1974-07-16 1985-10-17 Basf Ag, 6700 Ludwigshafen Acicular ferromagnetic metal particles consisting primarily of iron and processes for their manufacture
US4035181A (en) * 1976-09-08 1977-07-12 Minnesota Mining And Manufacturing Company Protection of silver reduction materials
CH633497A5 (en) * 1977-03-30 1982-12-15 Kernforschungsanlage Juelich METHOD FOR REDUCING REDUCABLE POLLUTANTS IN AQUEOUS SOLUTIONS.
US4131455A (en) * 1977-12-09 1978-12-26 Gaf Corporation Silver recovery
US4294608A (en) * 1980-03-27 1981-10-13 General Electric Company Catalytic alloys
US4456473A (en) * 1983-05-05 1984-06-26 Chemet Corporation Method of making silver powder
US4456474A (en) * 1983-05-05 1984-06-26 Chemet Corporation Method of making fine silver powder
IL106958A (en) * 1993-09-09 1996-06-18 Ultrafine Techn Ltd Method of producing high-purity ultra-fine metal powder
JP5013675B2 (en) * 2004-11-25 2012-08-29 株式会社リコー Electrocatalyst production method and electrode catalyst

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1867755A (en) * 1931-02-09 1932-07-19 Joseph J Pelc Production of beryllium and beryllium compounds and isolation of beryllium salts
US2945757A (en) * 1956-11-02 1960-07-19 Universal Oil Prod Co Recovery of noble metals from catalytic composites

Also Published As

Publication number Publication date
US3369886A (en) 1968-02-20
NL6512330A (en) 1966-03-24
DE1483141A1 (en) 1969-02-13

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