EP0391192A3 - Electrolytic process for manufacturing alkali dichromates and chromic acid - Google Patents

Electrolytic process for manufacturing alkali dichromates and chromic acid Download PDF

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Publication number
EP0391192A3
EP0391192A3 EP19900105661 EP90105661A EP0391192A3 EP 0391192 A3 EP0391192 A3 EP 0391192A3 EP 19900105661 EP19900105661 EP 19900105661 EP 90105661 A EP90105661 A EP 90105661A EP 0391192 A3 EP0391192 A3 EP 0391192A3
Authority
EP
European Patent Office
Prior art keywords
chromic acid
alkali
membranes
electrolytic process
dichromates
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
EP19900105661
Other languages
German (de)
French (fr)
Other versions
EP0391192A2 (en
EP0391192B1 (en
Inventor
Helmut Dr. Klotz
Rainer Dr. Weber
Norbert Dr. Lönhoff
Hans-Dieter Dr. Block
Hans Dieter Pinter
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 EP0391192A2 publication Critical patent/EP0391192A2/en
Publication of EP0391192A3 publication Critical patent/EP0391192A3/en
Application granted granted Critical
Publication of EP0391192B1 publication Critical patent/EP0391192B1/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
    • C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • 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
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/28—Per-compounds

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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Alkalidichromaten und/oder Chromsäure durch Elektrolyse von Alkalimonochromat- und/oder Alkalidichromatlösungen in Elektrolysezellen, deren Anoden- und Kathodenräume durch Kationenaustauscher­ membranen getrennt sind, wobei die Kationenaustauscher­ membranen einschichtige Membranen auf Basis von perfluo­ rierten Polymeren mit Sulfonsäuregruppen als Kationenaus­ tauschergruppen sind und im Kathodenraum der Zellen eine wäßrige Lösung mit einem pH-Wert von 4 bis 14 erzeugt wird. The present invention relates to a method for Manufacture of alkali dichromates and / or chromic acid by electrolysis of alkali monochromate and / or Alkali dichromate solutions in electrolysis cells, their Anode and cathode spaces through cation exchangers membranes are separated, with the cation exchanger membranes single-layer membranes based on perfluo polymers with sulfonic acid groups as cations are exchanger groups and one in the cathode compartment of the cells generated aqueous solution with a pH of 4 to 14 becomes.

EP90105661A 1989-04-06 1990-03-24 Electrolytic process for manufacturing alkali dichromates and chromic acid Expired - Lifetime EP0391192B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911065 1989-04-06
DE3911065A DE3911065A1 (en) 1989-04-06 1989-04-06 METHOD FOR PRODUCING ALKALIDICHROMATES AND CHROME ACIDS BY ELECTROLYSIS

Publications (3)

Publication Number Publication Date
EP0391192A2 EP0391192A2 (en) 1990-10-10
EP0391192A3 true EP0391192A3 (en) 1991-12-11
EP0391192B1 EP0391192B1 (en) 1995-06-21

Family

ID=6377951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105661A Expired - Lifetime EP0391192B1 (en) 1989-04-06 1990-03-24 Electrolytic process for manufacturing alkali dichromates and chromic acid

Country Status (15)

Country Link
US (1) US5127999A (en)
EP (1) EP0391192B1 (en)
JP (1) JP2904860B2 (en)
KR (1) KR960016417B1 (en)
AR (1) AR246559A1 (en)
BR (1) BR9001593A (en)
CA (1) CA2013782A1 (en)
DD (1) DD298004A5 (en)
DE (2) DE3911065A1 (en)
ES (1) ES2075083T3 (en)
PL (1) PL163448B1 (en)
RO (1) RO108989B1 (en)
RU (1) RU1806221C (en)
TR (1) TR26262A (en)
ZA (1) ZA902626B (en)

Families Citing this family (14)

* 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
AUPP521298A0 (en) * 1998-08-12 1998-09-03 Life Therapeutics Limited Purification of fibrinogen
AUPP790898A0 (en) 1998-12-23 1999-01-28 Life Therapeutics Limited Renal dialysis
US20050224355A1 (en) * 1999-12-23 2005-10-13 Brendon Conlan Removal of biological contaminants
AUPP790698A0 (en) 1998-12-23 1999-01-28 Life Therapeutics Limited Separation of microorganisms
US7077942B1 (en) * 1999-12-23 2006-07-18 Gradipore Limited Removal of biological contaminants
AUPQ691400A0 (en) * 2000-04-14 2000-05-11 Life Therapeutics Limited Separation of micromolecules
WO2001078877A1 (en) 2000-04-18 2001-10-25 Gradipore Limited Electrophoresis separation and treatment of samples
AUPQ697300A0 (en) 2000-04-18 2000-05-11 Life Therapeutics Limited Separation apparatus
US6923896B2 (en) * 2000-09-22 2005-08-02 The Texas A&M University System Electrophoresis apparatus and method
EP1341596B1 (en) * 2000-10-06 2010-07-07 Arturus Capital Limited Multi-port electrophoresis separation apparatus and corresponding method
AUPR222300A0 (en) * 2000-12-21 2001-01-25 Life Therapeutics Limited Electrophoresis device and method
CN107587156B (en) * 2017-09-07 2019-06-14 中国科学院青海盐湖研究所 The method for preparing chromic anhybride using ferrochrome
EP3966357A1 (en) 2019-05-10 2022-03-16 Materion Corporation Copper-beryllium alloy with high strength

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305463A (en) * 1962-03-16 1967-02-21 Pittsburgh Plate Glass Co Electrolytic production of dichromates
GB2051868A (en) * 1979-05-29 1981-01-21 Diamond Shamrock Corp Choice of operation parameters for chromic acid production method using a three compartment cell
GB2051869A (en) * 1979-05-29 1981-01-21 Diamond Shamrock Corp Electrolytic production of chromic acid using two-compartment and three-compartment cells

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305463A (en) * 1962-03-16 1967-02-21 Pittsburgh Plate Glass Co Electrolytic production of dichromates
GB2051868A (en) * 1979-05-29 1981-01-21 Diamond Shamrock Corp Choice of operation parameters for chromic acid production method using a three compartment cell
GB2051869A (en) * 1979-05-29 1981-01-21 Diamond Shamrock Corp Electrolytic production of chromic acid using two-compartment and three-compartment cells

Also Published As

Publication number Publication date
DD298004A5 (en) 1992-01-30
RU1806221C (en) 1993-03-30
TR26262A (en) 1995-02-15
DE3911065A1 (en) 1990-10-11
RO108989B1 (en) 1994-10-31
EP0391192A2 (en) 1990-10-10
EP0391192B1 (en) 1995-06-21
US5127999A (en) 1992-07-07
PL163448B1 (en) 1994-03-31
JP2904860B2 (en) 1999-06-14
AR246559A1 (en) 1994-08-31
JPH02285084A (en) 1990-11-22
ZA902626B (en) 1991-01-30
KR900016501A (en) 1990-11-13
BR9001593A (en) 1991-05-07
KR960016417B1 (en) 1996-12-11
CA2013782A1 (en) 1990-10-06
DE59009265D1 (en) 1995-07-27
ES2075083T3 (en) 1995-10-01

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