GB210434A - Process for obtaining alkali sulphides and sulphydrates - Google Patents

Process for obtaining alkali sulphides and sulphydrates

Info

Publication number
GB210434A
GB210434A GB1874/24A GB187424A GB210434A GB 210434 A GB210434 A GB 210434A GB 1874/24 A GB1874/24 A GB 1874/24A GB 187424 A GB187424 A GB 187424A GB 210434 A GB210434 A GB 210434A
Authority
GB
United Kingdom
Prior art keywords
barium
sulphide
alkali
sulphides
sodium
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
GB1874/24A
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.)
D Ind Chimique En Belgique SA
Original Assignee
D Ind Chimique En Belgique SA
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 D Ind Chimique En Belgique SA filed Critical D Ind Chimique En Belgique SA
Publication of GB210434A publication Critical patent/GB210434A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01B17/32—Hydrosulfides of sodium or potassium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

Alkali sulphides are obtained by treating a solution of an alkali metal salt such as sodium nitrate, chlorate carbonate, or sulphate, with barium sulphide in an atmosphere of sulphuretted hydrogen admitted from an external source. The product is cooled out of contact with air and the barium nitrate is separated from the sodium hydrosulphide by crystallization, after which the hydrosulphide is converted to sulphide. The separation of the reaction products is facilitated by adding a small quantity of carbon disulphide. The Specification as open to inspection under Sect. 91 (3) (a) includes the use of alkaline earth sulphides instead of barium sulphide, alkali silicate as the alkali salt, and other reducing agents such as hydrogen, carbon monoxide, and saturated or unsaturated hydrocarbons instead of sulphuretted hydrogen to supply a reducing atmosphere. A modification is described in which the reaction is effected in the dry way, sodium metasilicate, barium or calcium sulphide, and a small quantity of charcoal to provide the reducing atmosphere, being heated to 350-1500 DEG C. at a pressure of 25 cms. of water. This subject-matter does not appear in the Specification as accepted.
GB1874/24A 1923-01-23 1924-01-23 Process for obtaining alkali sulphides and sulphydrates Expired GB210434A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR210434X 1923-01-23

Publications (1)

Publication Number Publication Date
GB210434A true GB210434A (en) 1925-04-23

Family

ID=8880767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1874/24A Expired GB210434A (en) 1923-01-23 1924-01-23 Process for obtaining alkali sulphides and sulphydrates

Country Status (1)

Country Link
GB (1) GB210434A (en)

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