MX170481B - , "PROCEDIMIENTO ELECTROQUIMICO PARA LA OBTENCION DE ACIDO CROMICO 2CrO4, se transforma con CO2 bajo presión en una s - Google Patents

, "PROCEDIMIENTO ELECTROQUIMICO PARA LA OBTENCION DE ACIDO CROMICO 2CrO4, se transforma con CO2 bajo presión en una s

Info

Publication number
MX170481B
MX170481B MX017095A MX1709589A MX170481B MX 170481 B MX170481 B MX 170481B MX 017095 A MX017095 A MX 017095A MX 1709589 A MX1709589 A MX 1709589A MX 170481 B MX170481 B MX 170481B
Authority
MX
Mexico
Prior art keywords
chromic acid
2cro4
transformed
under pressure
liter
Prior art date
Application number
MX017095A
Other languages
English (en)
Inventor
Helmut Klotz
Rainer Weber
Bernhard Spreckelmeyer
Hans-Dieter Block
Norbert Lonhoff
Bernd Makowka
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 MX170481B publication Critical patent/MX170481B/es

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)

Abstract

La presente invención se refiere a procedimiento para la obtención de ácido crómico el cual es preparado por el lixiviado, en caso dado tras la separación de aluminio, vanadio y de otras impurezas, se ajusta a 20 hata 110 grados C a un valor del pH de 8 a 12 mediante la adición y/o la formación in situ de carbonato en una cantidad de 0,01 hasta 0,18 moles/litro (con 300 a 500 g/litro de Na2CrO4), se separan los carbonatos o bien hidróxidos precipitados, la solución se concentra por evaporación hasta un contenido de 750 a 1000 gramos/litro de Naolución que contiene dicromato.
MX017095A 1988-08-27 1989-08-07 , "PROCEDIMIENTO ELECTROQUIMICO PARA LA OBTENCION DE ACIDO CROMICO 2CrO4, se transforma con CO2 bajo presión en una s MX170481B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3829121A DE3829121A1 (de) 1988-08-27 1988-08-27 Elektrochemisches verfahren zur herstellung von chromsaeure

Publications (1)

Publication Number Publication Date
MX170481B true MX170481B (es) 1993-08-25

Family

ID=6361721

Family Applications (1)

Application Number Title Priority Date Filing Date
MX017095A MX170481B (es) 1988-08-27 1989-08-07 , "PROCEDIMIENTO ELECTROQUIMICO PARA LA OBTENCION DE ACIDO CROMICO 2CrO4, se transforma con CO2 bajo presión en una s

Country Status (15)

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

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 (zh) * 2013-12-11 2016-08-24 中国科学院青海盐湖研究所 利用电解法制备铬酸钠溶液的装置和方法
CN108103521B (zh) * 2017-12-22 2019-10-15 四川省银河化学股份有限公司 一种提高电解法制备铬酸酐品质的方法
CN113184907A (zh) * 2021-05-31 2021-07-30 河钢承德钒钛新材料有限公司 一种铬酸钠的纯化方法

Family Cites Families (6)

* 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
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
DE3829119A1 (de) * 1988-08-27 1990-03-01 Bayer Ag Verfahren zur herstellung von alkalidichromaten und chromsaeure
DE3829120A1 (de) * 1988-08-27 1990-03-01 Bayer Ag Verfahren zur herstellung eines elektrolyten zur erzeugung von alkalidichromaten und chromsaeure

Also Published As

Publication number Publication date
ES2042904T3 (es) 1993-12-16
EP0356802B1 (de) 1992-07-29
US5068015A (en) 1991-11-26
ZA896495B (en) 1990-05-30
DE58901937D1 (de) 1992-09-03
DE3829121A1 (de) 1990-03-01
EP0356802A3 (en) 1990-05-16
EP0356802A2 (de) 1990-03-07
AR247252A1 (es) 1994-11-30
PL163883B1 (pl) 1994-05-31
KR0152524B1 (ko) 1998-10-15
JPH02104684A (ja) 1990-04-17
TR24735A (tr) 1992-03-06
BR8904252A (pt) 1990-04-10
RO107136B1 (ro) 1993-09-30
DD284060A5 (de) 1990-10-31
JP2812730B2 (ja) 1998-10-22
KR900003418A (ko) 1990-03-26
CA1338145C (en) 1996-03-12

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