US1766722A - Process for the electrolytic manufacture of compounds containing active oxygen - Google Patents

Process for the electrolytic manufacture of compounds containing active oxygen Download PDF

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US1766722A
US1766722A US196629A US19662927A US1766722A US 1766722 A US1766722 A US 1766722A US 196629 A US196629 A US 196629A US 19662927 A US19662927 A US 19662927A US 1766722 A US1766722 A US 1766722A
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active oxygen
compounds containing
containing active
cathode
anode
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US196629A
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Nitzschke Oswin
Noack Erich
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IG Farbenindustrie AG
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IG Farbenindustrie AG
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    • 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
    • C25B1/29—Persulfates

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  • the present invention relates to a rocess for the electrolytic manufacture .0 compounds containing active oxygen such as hyperoxide, persulfuric acid, persulfates, percarbonates, etc.
  • Example 1 In the anode chamber of an electrolytic cell, divided by a porous diaphragm, saturated ammonium sulfate is in troduced, and into the cathode chamber sulfuric acid of 0.5% strength through which a vigorous stream of oxygen is passed. If electrolysis is now effected using an anode of platinum, a; cathode of amalgamated gold, and an anode current density of 20 amps. per square decimeter and a cathode current den sity of 0.4 amps. per square decimeter, the potential amounts to 3.7 volts. Thereby ammonium persulfate is produced in the anode chamber, and hydrogen peroxide in the cathode chamber.
  • the efliciencies of the current are the same in the anode or cathode chambers'as in'the manufacture of ammonium persulfate or hydrogen peroxide in separate apparatus, with the result that the quantity of active oxygen, which it is possible to produce in such separate apparatus, is obtained with about half the amount of current.
  • Example 2 In the anode chamber of an electrolytic cell, divided by a porous diaphragm, sulfuric acid of 50% strength is in-' troduced and in the cathode chamber sulfuric acid of 0.5% strength through which a vigorous stream of ox gen is passed.
  • the anode consists of platinum, thecathode of amalgamated silver. If electrolysis is effected, using an anode current density of 100 amps. per square decimeter and a cathode current density of 0.6 amps. er square decimeter, there is obtained mthe anode chamber persulfuric acid and in the cathode cham-- ⁇ ber hydrogen peroxide.
  • a process for producing compounds containing active oxygen by electrolysis which comprises subjecting a concentrated solution of a compound capable of forming a compound of a higher degree of oxidation containing active oxy en, to anodic electrolysis, and a weaker so u'tlonof' a compound I having the same acid radicle as said former compound to cathodic electrolysis while assing a, vigorous stream of oxygen throng the catholyte.
  • a process for the electrolytic menu facture of compounds containing active oxygen comprising the electrolysis of a concen trated solution of a sulfuric acid compp und in the anode chamber and of a diluted sulfuric acid solution in the cathode chamber, using an anode of platinum, a cathode of an amalgamated noble metal, an anodic current density of more than 10 amps. per square decimeter and cathodic density of less than 1 amp. per square decimeter and passing a vigorous stream of oxygen through the cathode chamber.
  • a process for the electrolytic manufacture of compounds containing active oxygen comprising the electrolysis of a saturated ammonium sulfate solution containing sulfuric acid in the anode chamber and of a diluted sulfuric acid solution of about 0.5% strength in the cathode chamber using an anode of platinum, a cathode of amalgamated gold, an anodic current density of 20 amps. per square decimeter, a cathodic current density of 0.4 amps. per square decimeter and passing a vigorous stream of oz: gen through the solution contained in the cat ode chamber.

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  • 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)

Description

drogen Patented June 24, 1930 UNITED \STATES PATENT OFFICE oswm mz'sonxnm amen NOAC'K, or wmsnoar, GERMANY, assrenoas so I. G. rmmwmnus'ram mmNoEsEL senarr, or FRANKFOBT-ON-THE-MAIN,
GERMANY PROCESS FOR THE ELECTROLYTIC BE OF COMPOUNDS CONTAINING AGIIVE OXYGEN R0 Drawing. Application filed June 4, 1927, Serial No. 198,629, and in France April 26, 1926.
The present invention relates to a rocess for the electrolytic manufacture .0 compounds containing active oxygen such as hyperoxide, persulfuric acid, persulfates, percarbonates, etc. I
There are known, up to date, electrolytic processes in which compounds containing active oxygen suchas for instance persulfuric acid, persulfates, etc., are formed at the anode. Furthermore it is known that hydrogen peroxide can be obtained at the oathode when introducing oxygen into the cathode chamber.
Now we have found that it is possible to use in electrolytic processes simultaneously the anode and the cathode for the manufacture of compounds containing active oxygen and to produce in the anode chamber a compound of the persulfuric acid,'or of the percarbonic acid,and in the cathode chamber hydrogen peroxide by introducing oxygen. Our new process offers considerable technical advantages over the processes known. up to date. In particular, the double utilization of the current reduces the cui;rent required for a given quantity of active oxygen to only about half of that hitherto necessary. Ob-
-viously it follows that thereby a given apparatus can be rende' ed doubly eflicientj The process can be; effected at ordinary or increased pressure and also in a continuous manner.
The following examples will serve to illustrate our invention: I
Example 1.-In the anode chamber of an electrolytic cell, divided by a porous diaphragm, saturated ammonium sulfate is in troduced, and into the cathode chamber sulfuric acid of 0.5% strength through which a vigorous stream of oxygen is passed. If electrolysis is now effected using an anode of platinum, a; cathode of amalgamated gold, and an anode current density of 20 amps. per square decimeter and a cathode current den sity of 0.4 amps. per square decimeter, the potential amounts to 3.7 volts. Thereby ammonium persulfate is produced in the anode chamber, and hydrogen peroxide in the cathode chamber.
The efliciencies of the current are the same in the anode or cathode chambers'as in'the manufacture of ammonium persulfate or hydrogen peroxide in separate apparatus, with the result that the quantity of active oxygen, which it is possible to produce in such separate apparatus, is obtained with about half the amount of current.
Example 2.-In the anode chamber of an electrolytic cell, divided by a porous diaphragm, sulfuric acid of 50% strength is in-' troduced and in the cathode chamber sulfuric acid of 0.5% strength through which a vigorous stream of ox gen is passed. The anode consists of platinum, thecathode of amalgamated silver. If electrolysis is effected, using an anode current density of 100 amps. per square decimeter and a cathode current density of 0.6 amps. er square decimeter, there is obtained mthe anode chamber persulfuric acid and in the cathode cham-- \ber hydrogen peroxide.
We wish it to be understood that one may use, insteadof the compounds mentioned, the
equivalents thereof so that at the cathode for instance a percarbonate or ozone is formed.
We claim: v
1. A process for producing compounds containing active oxygen by electrolysis which comprises subjecting a concentrated solution of a compound capable of forming a compound of a higher degree of oxidation containing active oxy en, to anodic electrolysis, and a weaker so u'tlonof' a compound I having the same acid radicle as said former compound to cathodic electrolysis while assing a, vigorous stream of oxygen throng the catholyte. p p
2. A process for the electrolytic menu facture of compounds containing active oxygen comprising the electrolysis of a concen trated solution of a sulfuric acid compp und in the anode chamber and of a diluted sulfuric acid solution in the cathode chamber, using an anode of platinum, a cathode of an amalgamated noble metal, an anodic current density of more than 10 amps. per square decimeter and cathodic density of less than 1 amp. per square decimeter and passing a vigorous stream of oxygen through the cathode chamber.
3. A process for the electrolytic manufacture of compounds containing active oxygen comprising the electrolysis of a saturated ammonium sulfate solution containing sulfuric acid in the anode chamber and of a diluted sulfuric acid solution of about 0.5% strength in the cathode chamber using an anode of platinum, a cathode of amalgamated gold, an anodic current density of 20 amps. per square decimeter, a cathodic current density of 0.4 amps. per square decimeter and passing a vigorous stream of oz: gen through the solution contained in the cat ode chamber.
In testimony our hands.
OSWIN NITZSCHKE. ERICH N OACK.
whereof we have hereunto set
US196629A 1926-04-26 1927-06-04 Process for the electrolytic manufacture of compounds containing active oxygen Expired - Lifetime US1766722A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2904478A (en) * 1954-12-08 1959-09-15 Degussa Production of hydrogen peroxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2904478A (en) * 1954-12-08 1959-09-15 Degussa Production of hydrogen peroxide

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