EP0356802A3 - Electrochemical process for the production of chromic acid - Google Patents

Electrochemical process for the production of chromic acid Download PDF

Info

Publication number
EP0356802A3
EP0356802A3 EP89115030A EP89115030A EP0356802A3 EP 0356802 A3 EP0356802 A3 EP 0356802A3 EP 89115030 A EP89115030 A EP 89115030A EP 89115030 A EP89115030 A EP 89115030A EP 0356802 A3 EP0356802 A3 EP 0356802A3
Authority
EP
European Patent Office
Prior art keywords
production
chromic acid
electrochemical process
electrochemical
chromic
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.)
Granted
Application number
EP89115030A
Other languages
German (de)
Other versions
EP0356802B1 (en
EP0356802A2 (en
Inventor
Hans-Dieter Dr. Block
Norbert Dr. Lonhoff
Bernd Dr. Makowka
Helmut Dr. Klotz
Rainer Dr. Weber
Bernhard Dr. Spreckelmeyer
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of EP0356802A2 publication Critical patent/EP0356802A2/en
Publication of EP0356802A3 publication Critical patent/EP0356802A3/en
Application granted granted Critical
Publication of EP0356802B1 publication Critical patent/EP0356802B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/22—Inorganic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C25B15/085—Removing impurities

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
EP89115030A 1988-08-27 1989-08-15 Electrochemical process for the production of chromic acid Expired - Lifetime EP0356802B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3829121A DE3829121A1 (en) 1988-08-27 1988-08-27 ELECTROCHEMICAL METHOD FOR THE PRODUCTION OF CHROME ACID
DE3829121 1988-08-27

Publications (3)

Publication Number Publication Date
EP0356802A2 EP0356802A2 (en) 1990-03-07
EP0356802A3 true EP0356802A3 (en) 1990-05-16
EP0356802B1 EP0356802B1 (en) 1992-07-29

Family

ID=6361721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115030A Expired - Lifetime EP0356802B1 (en) 1988-08-27 1989-08-15 Electrochemical process for the production of chromic acid

Country Status (15)

Country Link
US (1) US5068015A (en)
EP (1) EP0356802B1 (en)
JP (1) JP2812730B2 (en)
KR (1) KR0152524B1 (en)
AR (1) AR247252A1 (en)
BR (1) BR8904252A (en)
CA (1) CA1338145C (en)
DD (1) DD284060A5 (en)
DE (2) DE3829121A1 (en)
ES (1) ES2042904T3 (en)
MX (1) MX170481B (en)
PL (1) PL163883B1 (en)
RO (1) RO107136B1 (en)
TR (1) TR24735A (en)
ZA (1) ZA896495B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6063252A (en) * 1997-08-08 2000-05-16 Raymond; John L. Method and apparatus for enriching the chromium in a chromium plating bath
CN103668301B (en) * 2013-12-11 2016-08-24 中国科学院青海盐湖研究所 Electrolysis is utilized to prepare the apparatus and method of chromium acid sodium solution
CN108103521B (en) * 2017-12-22 2019-10-15 四川省银河化学股份有限公司 A method of it improving electrolysis method and prepares quality of chromic anhydride
CN113184907A (en) * 2021-05-31 2021-07-30 河钢承德钒钛新材料有限公司 Method for purifying sodium chromate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046091A (en) * 1958-12-19 1962-07-24 Pittsburgh Plate Glass Co Preparation of alkali metal dichromate
US3305463A (en) * 1962-03-16 1967-02-21 Pittsburgh Plate Glass Co Electrolytic production of dichromates
US3454478A (en) * 1965-06-28 1969-07-08 Ppg Industries Inc Electrolytically reducing halide impurity content of alkali metal dichromate solutions

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA739447A (en) * 1966-07-26 W. Carlin William Electrolytic production of chromic acid
DE3829119A1 (en) * 1988-08-27 1990-03-01 Bayer Ag PROCESS FOR PREPARING ALKALIDICHROMATE AND CHROMIUM ACID
DE3829120A1 (en) * 1988-08-27 1990-03-01 Bayer Ag METHOD FOR PRODUCING AN ELECTROLYTE FOR GENERATING ALKALIDICHROMATES AND CHROME ACID

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046091A (en) * 1958-12-19 1962-07-24 Pittsburgh Plate Glass Co Preparation of alkali metal dichromate
US3305463A (en) * 1962-03-16 1967-02-21 Pittsburgh Plate Glass Co Electrolytic production of dichromates
US3454478A (en) * 1965-06-28 1969-07-08 Ppg Industries Inc Electrolytically reducing halide impurity content of alkali metal dichromate solutions

Also Published As

Publication number Publication date
US5068015A (en) 1991-11-26
TR24735A (en) 1992-03-06
DD284060A5 (en) 1990-10-31
KR0152524B1 (en) 1998-10-15
AR247252A1 (en) 1994-11-30
EP0356802B1 (en) 1992-07-29
JP2812730B2 (en) 1998-10-22
CA1338145C (en) 1996-03-12
BR8904252A (en) 1990-04-10
PL163883B1 (en) 1994-05-31
JPH02104684A (en) 1990-04-17
DE58901937D1 (en) 1992-09-03
EP0356802A2 (en) 1990-03-07
KR900003418A (en) 1990-03-26
RO107136B1 (en) 1993-09-30
MX170481B (en) 1993-08-25
ES2042904T3 (en) 1993-12-16
ZA896495B (en) 1990-05-30
DE3829121A1 (en) 1990-03-01

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