FR2113611A5 - Sodium polysulphide and hydroxide - from aq sodium (hydrogen) sulphide and gaseous oxidant on "contacogen" - Google Patents

Sodium polysulphide and hydroxide - from aq sodium (hydrogen) sulphide and gaseous oxidant on "contacogen"

Info

Publication number
FR2113611A5
FR2113611A5 FR7139738A FR7139738A FR2113611A5 FR 2113611 A5 FR2113611 A5 FR 2113611A5 FR 7139738 A FR7139738 A FR 7139738A FR 7139738 A FR7139738 A FR 7139738A FR 2113611 A5 FR2113611 A5 FR 2113611A5
Authority
FR
France
Prior art keywords
sodium
contacogen
polysulphide
oxidising
sulphide
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
FR7139738A
Other languages
French (fr)
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.)
Mead Corp
Original Assignee
Mead Corp
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 Mead Corp filed Critical Mead Corp
Application granted granted Critical
Publication of FR2113611A5 publication Critical patent/FR2113611A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
    • C01D1/04—Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/22—Alkali metal sulfides or polysulfides
    • C01B17/34—Polysulfides of sodium or potassium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Paper (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Coloring (AREA)

Abstract

Gaseous oxidising agent and a reducing agent consisting of an aq. soln. contg. Na2S or NaHS are contacted simultaneously with a "contacogen" which is relatively inert chemically towards the oxidising and reducing agents, so that simultaneous reduction and oxidn. occur, with formation of NaOH and Na polysulphide. Prod. is used in treatment of lignocellulose material. Formation of Na2S2O3 by-prod. is minimal with this new redox system. Contacogen is an electroconducting solid acting as site for interfacial contact of reducing and oxidising agents and in contact with them at the same time, to yield the desired reaction.
FR7139738A 1970-11-06 1971-11-05 Sodium polysulphide and hydroxide - from aq sodium (hydrogen) sulphide and gaseous oxidant on "contacogen" Expired FR2113611A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8750470A 1970-11-06 1970-11-06

Publications (1)

Publication Number Publication Date
FR2113611A5 true FR2113611A5 (en) 1972-06-23

Family

ID=22205588

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7139738A Expired FR2113611A5 (en) 1970-11-06 1971-11-05 Sodium polysulphide and hydroxide - from aq sodium (hydrogen) sulphide and gaseous oxidant on "contacogen"

Country Status (9)

Country Link
JP (1) JPS5040395B1 (en)
CA (1) CA959628A (en)
ES (1) ES396755A1 (en)
FI (1) FI57244C (en)
FR (1) FR2113611A5 (en)
IT (1) IT945785B (en)
NO (1) NO138573C (en)
SE (3) SE388882C (en)
ZA (1) ZA716955B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2314145A1 (en) * 1975-06-10 1977-01-07 Showa Denko Kk PROCESS FOR THE TREATMENT OF SULPHIDES
US4162187A (en) 1974-05-09 1979-07-24 The Mead Corporation Process for production of sodium thiosulfate and sodium hydroxide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636826B2 (en) * 2009-11-03 2014-01-28 Societe Bic Hydrogen membrane separator
FI128221B (en) 2015-04-27 2019-12-31 Metsae Fibre Oy Method for regenerating a catalyst used for producing polysulphide lye

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162187A (en) 1974-05-09 1979-07-24 The Mead Corporation Process for production of sodium thiosulfate and sodium hydroxide
FR2314145A1 (en) * 1975-06-10 1977-01-07 Showa Denko Kk PROCESS FOR THE TREATMENT OF SULPHIDES

Also Published As

Publication number Publication date
FI57244B (en) 1980-03-31
SE388882C (en) 1978-06-26
JPS5040395B1 (en) 1975-12-24
SE7707926L (en) 1977-07-07
NO138573C (en) 1978-09-27
CA959628A (en) 1974-12-24
DE2151465B2 (en) 1977-03-10
SE7709554L (en) 1977-08-25
ZA716955B (en) 1972-07-26
FI57244C (en) 1980-07-10
IT945785B (en) 1973-05-10
ES396755A1 (en) 1975-03-16
SE388882B (en) 1976-10-18
NO138573B (en) 1978-06-19
DE2151465A1 (en) 1972-05-10
SE431740B (en) 1984-02-27

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Legal Events

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TP Transmission of property