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DE752114C - Process for the electrolytic rhodium plating of lignosulfonic acid - Google Patents

Process for the electrolytic rhodium plating of lignosulfonic acid

Info

Publication number
DE752114C
DE752114C DESCH123563D DESC123563D DE752114C DE 752114 C DE752114 C DE 752114C DE SCH123563 D DESCH123563 D DE SCH123563D DE SC123563 D DESC123563 D DE SC123563D DE 752114 C DE752114 C DE 752114C
Authority
DE
Germany
Prior art keywords
lignosulfonic acid
rhodium plating
electrolytic
electrolytic rhodium
plating
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.)
Expired
Application number
DESCH123563D
Other languages
German (de)
Inventor
Kurt Dr Schwabe
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.)
Individual
Original Assignee
Individual
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
Priority to DESCH121596D priority Critical patent/DE725081C/en
Application filed by Individual filed Critical Individual
Priority to DESCH123563D priority patent/DE752114C/en
Application granted granted Critical
Publication of DE752114C publication Critical patent/DE752114C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
    • C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Description

Verfahren zur elektrolytischen Rhodanierung von Ligninsulfonsäure Nach -dem Verfahren dies Hauptpatents lassen sich aus Lösungen von Lign-ins.uJfon- säuren, in ,sbesond;eire Zellstaffsulfitablaugen, durch elektrolytische Rho,danierung wasser- unlösliche Verbindungen herstellen, die einer vielfaöhen Verwendung fähig sind. Auf diesem Wege gelingt es auch, aus -den Ab- laugen .die restlichem organischen Verbindun- gen fast volIständng zu entfernen und ihre Schädlichkeit weitgehend zu vermindern. In Weiterbildung .des Verfahrens wurde gefunden, d@aß man beider Rhod@arnierung der Lign@i,nsulfon;säu:reläyunb-en vorteilhaft außer dem Rholdansalz noch ein entsprechendes Haloigens@alz zugibt und den auf diese Weise erlhhaltenen Elektroalyten als Anolyten in einer Elektralysenzelle entsprechend dem Haupt- patent verwendet. Man erhält auf diese Weise eine glattere Umsetzung ohne Bil-äung von Polynhodan. Beispiel 30 g Ligninsulfonsäure. werden in ioo ccm Wasser gelöst, dazu werden 3o g RhodankaLium und 4o,- Kochsalz gegeben. Die Lösung wird als Anolyt verwendet. Al.s Katholyt dient eine ioo/oige Ko ,hsal:zaösung, als Kathodenmaterial wird Blei verwendet, als Anode eine rotierende Kohleelektrode. Anoden- und Kathodenraum werden durch ein Tondiaphragma getrennt. Die anodische Stromdichte beträgt 0,03 A/qcm. Nach etwa io Stunden ist die Lösung fast farblos, und ein dielcer, gelbbrauner Nied@ersch:lag ist entstan(den. Das Filtrat: kann wieder zur Rhodan:ierung verwendet werden.Process for the electrolytic rhodium plating of lignosulphonic acid According to the procedure of this main patent can be derived from solutions from Lign-ins.uJfon- acids, in, sbesond; eire cellulose sulphite waste liquors, by electrolytic Rho, danate water- create insoluble compounds that one are capable of various uses. on in this way it is also possible to lye. the remaining organic compounds genes to remove almost completely and their To largely reduce harmfulness. In further training. The procedure was found that one ate both rhod @ arnation of the Lign @ i, nsulfon; säu: reläyunb-en advantageous except a corresponding one to the Rholdansalz Haloigens @ alz admits and that way obtained electroalytes as anolytes in one Electrolysis cell corresponding to the main patent used. One gets in this way a smoother implementation without the formation of Polynhodan. Example 30 g of lignosulfonic acid. are dissolved in 100 cc of water, 3o g of rhodankaLium and 40, - table salt are added. The solution is used as an anolyte. A 100% carbon dioxide solution serves as the catholyte, lead is used as the cathode material, and a rotating carbon electrode as the anode. The anode and cathode compartments are separated by a clay diaphragm. The anodic current density is 0.03 A / qcm. After about 10 hours the solution is almost colorless and a dielectric, yellow-brown deposit has formed. The filtrate can be used again for rhodanization.

Claims (1)

PATENTANSPRUCH: Verfahren zur elektrolytischen Rhodan,ierung von Ligninsu lfonsäuren gemäß Patent 725 oäi, dadurch gekennzeichnet, ,daß die Lignirneu:lfonsäurelösung bei Gegenwart von Halogensalzen der Elektrolyse unterworfen wird. PATENT CLAIM: Process for the electrolytic rhodanation of lignin sulfonic acids according to patent 725 or the like, characterized in that the lignin sulfonic acid solution is subjected to electrolysis in the presence of halogen salts.
DESCH123563D 1940-12-15 1941-11-04 Process for the electrolytic rhodium plating of lignosulfonic acid Expired DE752114C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DESCH121596D DE725081C (en) 1940-12-15 1940-12-15 Process for the electrolytic rhodium plating of lignosulfonic acid
DESCH123563D DE752114C (en) 1940-12-15 1941-11-04 Process for the electrolytic rhodium plating of lignosulfonic acid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DESCH121596D DE725081C (en) 1940-12-15 1940-12-15 Process for the electrolytic rhodium plating of lignosulfonic acid
DESCH123563D DE752114C (en) 1940-12-15 1941-11-04 Process for the electrolytic rhodium plating of lignosulfonic acid

Publications (1)

Publication Number Publication Date
DE752114C true DE752114C (en) 1955-06-10

Family

ID=32471363

Family Applications (2)

Application Number Title Priority Date Filing Date
DESCH121596D Expired DE725081C (en) 1940-12-15 1940-12-15 Process for the electrolytic rhodium plating of lignosulfonic acid
DESCH123563D Expired DE752114C (en) 1940-12-15 1941-11-04 Process for the electrolytic rhodium plating of lignosulfonic acid

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DESCH121596D Expired DE725081C (en) 1940-12-15 1940-12-15 Process for the electrolytic rhodium plating of lignosulfonic acid

Country Status (1)

Country Link
DE (2) DE725081C (en)

Also Published As

Publication number Publication date
DE725081C (en) 1942-09-15

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