DE494212C - Production of a calcium suitable for the absorption of nitrogen - Google Patents

Production of a calcium suitable for the absorption of nitrogen

Info

Publication number
DE494212C
DE494212C DEI35654D DEI0035654D DE494212C DE 494212 C DE494212 C DE 494212C DE I35654 D DEI35654 D DE I35654D DE I0035654 D DEI0035654 D DE I0035654D DE 494212 C DE494212 C DE 494212C
Authority
DE
Germany
Prior art keywords
calcium
nitrogen
production
absorption
calcium suitable
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
DEI35654D
Other languages
German (de)
Inventor
Dr A Von Antropoff
Dr Emil Germann
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 DEI35654D priority Critical patent/DE494212C/en
Application granted granted Critical
Publication of DE494212C publication Critical patent/DE494212C/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
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/06—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron
    • C01B21/0612—Binary compounds of nitrogen with metals, with silicon, or with boron, or with carbon, i.e. nitrides; Compounds of nitrogen with more than one metal, silicon or boron with alkaline-earth metals, beryllium or magnesium

Description

Herstellung eines zur Absorption von Stickstoff geeigneten Calciums Es ist bekannt, daß Calciummetall schlechthin nicht zur Absorption von Stickstoff geeignet ist. Während einige Proben von technischem Calcium zwischen 300 und 500° sehr schnell und vollständig reagieren, gibt es andere, die bei beliebigen Temperaturen unterhalb des Schmelzpunktes nicht oder nur äußerst langsam reagieren.Production of a Calcium Suitable for Absorbing Nitrogen It is known that calcium metal is simply not suitable for absorbing nitrogen. While some samples of technical calcium react very quickly and completely between 300 and 500 °, there are others that do not react or react only extremely slowly at any temperature below the melting point.

Man war der Ansicht, daß eine besondere Kristallform des Calciums die reaktionsfähigste sei. Später hat man festgestellt, daß auch Legierungen von Calcium besonders mit Alkalimetallen oder auch mit Calciumnitrid reaktionsfähiger sind als reines Calcium und infolgedessen schon bei Temperaturen von 3oo bis 500° Stickstoff rasch und vollständig absorbieren. Alle diese Arbeiten führten zu dem Ergebnis, daß die genannten Legierungszusätze in verhältnismäßig großen Mengen in dem Calcium enthalten sein müssen. Überraschenderweise wurde festgestellt, daß bereits ganz geringe Mengen von Alkahmetallen, besonders Natrium, an und für sich reaktionsträge Calciumstücke zu aktivieren vermögen. Es genügt bereits, gelinge Mengen von Natriumdampf, etwa unter Anwendung von Vakuum, auf der Oberfläche kalter Calciumstücke zu verdichten. Es braucht in diesem Falle eine Legierung des Natriums mit dem Calcium nicht stattzufinden. Die punktförmigen, auf der Oberfläche abgeschiedenen Natriumteilchen stellen gewissermaßen Keime dar, an denen die Umsetzung des Calciums mit dem Stickstoff unter Nitridbildun_g beginnt und sich dann rasch durch die ganze Masse bei Temperaturen von 3oo bis 5oo°. fortsetzt.It was believed that calcium was a special crystal form the most responsive. It was later discovered that alloys of Calcium is more reactive, especially with alkali metals or with calcium nitride are as pure calcium and as a result already at temperatures of 3oo to 500 ° Absorb nitrogen quickly and completely. All of this work led to this Result that the alloy additives mentioned in relatively large amounts in must contain calcium. Surprisingly, it was found that already very small amounts of alkali metals, especially sodium, in and of themselves inert Able to activate calcium pieces. It is already sufficient to succeed in quantities of sodium vapor, using a vacuum, for example, to compress cold pieces of calcium on the surface. In this case there is no need to alloy the sodium with the calcium. The point-like sodium particles deposited on the surface are, so to speak, Germs in which the reaction of calcium with nitrogen with nitride formation begins and then quickly through the whole mass at temperatures of 3oo to 5oo °. continues.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines zur Absorption von Stickstoff besonders geeigneten Calciums, dadurch gekennzeichnet, daß man Natriummetall in äußerst feiner Verteilung und sehr geringer Menge auf der Oberfläche von Calcium niederschlägt. Claim: Process for the production of a calcium particularly suitable for the absorption of nitrogen, characterized in that sodium metal is deposited in extremely fine distribution and in very small amounts on the surface of calcium.
DEI35654D 1928-10-02 1928-10-02 Production of a calcium suitable for the absorption of nitrogen Expired DE494212C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI35654D DE494212C (en) 1928-10-02 1928-10-02 Production of a calcium suitable for the absorption of nitrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI35654D DE494212C (en) 1928-10-02 1928-10-02 Production of a calcium suitable for the absorption of nitrogen

Publications (1)

Publication Number Publication Date
DE494212C true DE494212C (en) 1930-03-20

Family

ID=7189045

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI35654D Expired DE494212C (en) 1928-10-02 1928-10-02 Production of a calcium suitable for the absorption of nitrogen

Country Status (1)

Country Link
DE (1) DE494212C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2841893A1 (en) * 2002-07-02 2004-01-09 Francois Lacoste CALCIUM NITRIDE SYNTHESIS PROCESS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2841893A1 (en) * 2002-07-02 2004-01-09 Francois Lacoste CALCIUM NITRIDE SYNTHESIS PROCESS
WO2004005185A1 (en) * 2002-07-02 2004-01-15 Lacoste Francois Method for calcium nitride synthesis
US7141228B2 (en) 2002-07-02 2006-11-28 Francois Lacoste Method for calcium nitride synthesis

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