US1779436A - Process of electrodepositing metals of the platinum group - Google Patents

Process of electrodepositing metals of the platinum group Download PDF

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Publication number
US1779436A
US1779436A US375592A US37559229A US1779436A US 1779436 A US1779436 A US 1779436A US 375592 A US375592 A US 375592A US 37559229 A US37559229 A US 37559229A US 1779436 A US1779436 A US 1779436A
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United States
Prior art keywords
platinum
nitrite
solution
bath
metals
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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 - Lifetime
Application number
US375592A
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English (en)
Inventor
Keitel Christian William
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.)
Baker and Co Inc
Original Assignee
Baker and Co Inc
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Filing date
Publication date
Priority to BE371542D priority Critical patent/BE371542A/xx
Application filed by Baker and Co Inc filed Critical Baker and Co Inc
Priority to US375592A priority patent/US1779436A/en
Priority to DE1930529848D priority patent/DE529848C/de
Priority to FR698153D priority patent/FR698153A/fr
Application granted granted Critical
Publication of US1779436A publication Critical patent/US1779436A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/50—Electroplating: Baths therefor from solutions of platinum group metals

Definitions

  • ammino nitrite salts of platinum, palladium and rhodium to fulfill these requirements, and preferably I make use of the diammino nitrites.
  • This salt is diiiicultly soluble in water, but is readily soluble in hot dilute ammonia whereby it is transformed into tetrammino nitrite which is very soluble in water.
  • diammino salt taking platinum as an example. a concentrated solution of platinum chloride or sodium platinum chloride is taken and a slight excess of a concentrated solution of sodium nitrite is added. This causes a change of color from orange to light yellow or nearly colorless, and nitrous fumes are given off as a gas. Heat is applied until no more reaction-takes place, and after cooling, a slight excess of ammonia is added. The resulting precipitate is filtered and washed alkali free, and is. the desired salt, namely platinum. diammino nitrite.
  • the temperature of the bath should be 95 C. or more and the solution should be kept ammoniacal, the platinum diammino nitrite being added as needed to supply platinum. It
  • Plating salts for other metals of the latinum group can be made in a way corresponding to that which has been described for platinum, using palladous chloride for palladium and rhodium trichloride for rhodium, the succeeding steps being the same as in the case of latinum, within the skill of a chemist, and t e solution or bath prepared similarly.
  • salts than chlorides v may be used, such as sulphates, and other double salts than sodium chlorides, such as ammonium chlorides, all as will be understood by those skilled in electro-metallurgical chemistry, and the salts expressly mentioned are to be regarded merely as typical ones.
  • Method for the preparation of an electrolyte for the electrodeposition of a metal is or alloy of the group comprising platinum, palladium and rhodium which comprises dissolving an ammino nitrite of the metal to be deposited in Water containing ammoniaand a suitable conducting salt. no CHRISTIAN WILLIAM KEITEL.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Catalysts (AREA)
US375592A 1929-07-02 1929-07-02 Process of electrodepositing metals of the platinum group Expired - Lifetime US1779436A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE371542D BE371542A (ko) 1929-07-02
US375592A US1779436A (en) 1929-07-02 1929-07-02 Process of electrodepositing metals of the platinum group
DE1930529848D DE529848C (de) 1929-07-02 1930-05-16 Verfahren zur Erzeugung elektrolytischer Niederschlaege von Metallen der Platingruppe
FR698153D FR698153A (fr) 1929-07-02 1930-06-27 Perfectionnements au dépôt galvanique des métaux et alliages du groupe platine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US375592A US1779436A (en) 1929-07-02 1929-07-02 Process of electrodepositing metals of the platinum group

Publications (1)

Publication Number Publication Date
US1779436A true US1779436A (en) 1930-10-28

Family

ID=23481488

Family Applications (1)

Application Number Title Priority Date Filing Date
US375592A Expired - Lifetime US1779436A (en) 1929-07-02 1929-07-02 Process of electrodepositing metals of the platinum group

Country Status (4)

Country Link
US (1) US1779436A (ko)
BE (1) BE371542A (ko)
DE (1) DE529848C (ko)
FR (1) FR698153A (ko)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984604A (en) * 1958-08-06 1961-05-16 Sel Rex Corp Platinum plating composition and process
US2984603A (en) * 1958-08-06 1961-05-16 Sel Rex Corp Platinum plating composition and process
US3150065A (en) * 1961-02-27 1964-09-22 Ibm Method for plating palladium
US3530050A (en) * 1964-06-12 1970-09-22 Johnson Matthey Co Ltd Electrodeposition of palladium
US4092225A (en) * 1976-11-17 1978-05-30 Amp Incorporated High efficiency palladium electroplating process, bath and composition therefor
US4285784A (en) * 1980-07-10 1981-08-25 The United States Of America As Represented By The Secretary Of The Interior Process of electroplating a platinum-rhodium alloy coating
US4313806A (en) * 1980-10-10 1982-02-02 Air Products And Chemicals, Inc. Cathodic protection of catalysts in a corrosive environment
US5102509A (en) * 1988-09-07 1992-04-07 Johnson Matthey Public Limited Company Plating
US6521113B2 (en) 2000-01-14 2003-02-18 Honeywell International Inc. Method of improving the oxidation resistance of a platinum modified aluminide diffusion coating
WO2024028570A1 (en) 2022-08-04 2024-02-08 Johnson Matthey Public Limited Company Method of manufacturing a platinum complex for plating

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1356353A (fr) * 1963-02-12 1964-03-27 Louyot Comptoir Lyon Alemand Procédé de dépôt électrolytique d'une couche de platine et électrolyte pour lamise en oeuvre du procédé
CA1089796A (en) * 1976-11-17 1980-11-18 Thomas F. Davis Electroplating palladium

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984604A (en) * 1958-08-06 1961-05-16 Sel Rex Corp Platinum plating composition and process
US2984603A (en) * 1958-08-06 1961-05-16 Sel Rex Corp Platinum plating composition and process
US3150065A (en) * 1961-02-27 1964-09-22 Ibm Method for plating palladium
US3530050A (en) * 1964-06-12 1970-09-22 Johnson Matthey Co Ltd Electrodeposition of palladium
US4092225A (en) * 1976-11-17 1978-05-30 Amp Incorporated High efficiency palladium electroplating process, bath and composition therefor
US4285784A (en) * 1980-07-10 1981-08-25 The United States Of America As Represented By The Secretary Of The Interior Process of electroplating a platinum-rhodium alloy coating
US4313806A (en) * 1980-10-10 1982-02-02 Air Products And Chemicals, Inc. Cathodic protection of catalysts in a corrosive environment
EP0049811A1 (en) * 1980-10-10 1982-04-21 Air Products And Chemicals, Inc. Cathodic protection of catalysts in a corrosive environment
US5102509A (en) * 1988-09-07 1992-04-07 Johnson Matthey Public Limited Company Plating
EP0358375B1 (en) * 1988-09-07 1996-02-28 Johnson Matthey Public Limited Company Platinum or platinum alloy plating bath
US6521113B2 (en) 2000-01-14 2003-02-18 Honeywell International Inc. Method of improving the oxidation resistance of a platinum modified aluminide diffusion coating
WO2024028570A1 (en) 2022-08-04 2024-02-08 Johnson Matthey Public Limited Company Method of manufacturing a platinum complex for plating

Also Published As

Publication number Publication date
BE371542A (ko)
DE529848C (de) 1931-07-17
FR698153A (fr) 1931-01-28

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