GB368424A - Improvements in the manufacture and production of cyanamides of the alkaline earth metals - Google Patents

Improvements in the manufacture and production of cyanamides of the alkaline earth metals

Info

Publication number
GB368424A
GB368424A GB3808130A GB3808130A GB368424A GB 368424 A GB368424 A GB 368424A GB 3808130 A GB3808130 A GB 3808130A GB 3808130 A GB3808130 A GB 3808130A GB 368424 A GB368424 A GB 368424A
Authority
GB
United Kingdom
Prior art keywords
alkaline earth
oxides
catalysts
carbonates
hydrocarbons
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
GB3808130A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB3808130A priority Critical patent/GB368424A/en
Publication of GB368424A publication Critical patent/GB368424A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/16—Cyanamide; Salts thereof
    • C01C3/18—Calcium cyanamide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/16—Cyanamide; Salts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Alkaline earth cyanamides are obtained by leading ammonia and aliphatic unsaturated hydrocarbons over the oxides or carbonates of the alkaline earth metals, such as those of calcium or barium, at temperatures between about 400 and 1000 DEG C. Hydrogen is also obtained. The oxides or carbonates employed may be from industrial or natural sources. The hydrocarbons referred to are ethylene, propylene, butylene and acetylene. The conversion may be increased by the presence of catalysts giving rise to hydrocyanic acid from hydrocarbons and ammonia. Phosphates of the heavy metals of Groups 5-8 of the periodic system or of copper such as those of iron or molybdenum are the catalysts particularly referred to and may be used on carriers. These phosphates may be mixed with moist china clay in the form of small balls and are ready for use after being kept in a drying cupboard until hard. Other catalysts, such as the oxides of nickel, chromium, copper, or of other heavy metals, or aluminium oxide especially when in the form of a gel, may be used. The catalysts may be mixed with the alkaline earth oxides or carbonates but are preferably arranged in front of them so that the gas mixture first comes into contact with the catalyst. Examples are given. The Provisional Specification describes also the use of methane instead of unsaturated hydrocarbons. Specification 346,463 is referred to.
GB3808130A 1930-12-17 1930-12-17 Improvements in the manufacture and production of cyanamides of the alkaline earth metals Expired GB368424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3808130A GB368424A (en) 1930-12-17 1930-12-17 Improvements in the manufacture and production of cyanamides of the alkaline earth metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3808130A GB368424A (en) 1930-12-17 1930-12-17 Improvements in the manufacture and production of cyanamides of the alkaline earth metals

Publications (1)

Publication Number Publication Date
GB368424A true GB368424A (en) 1932-03-10

Family

ID=10401043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3808130A Expired GB368424A (en) 1930-12-17 1930-12-17 Improvements in the manufacture and production of cyanamides of the alkaline earth metals

Country Status (1)

Country Link
GB (1) GB368424A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159051A (en) * 1981-07-23 1985-11-27 Dixon International Ltd Panel device for a ventilation opening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159051A (en) * 1981-07-23 1985-11-27 Dixon International Ltd Panel device for a ventilation opening

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