AT154707B - Process for the production of sublimed aluminum chloride. - Google Patents

Process for the production of sublimed aluminum chloride.

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Publication number
AT154707B
AT154707B AT154707DA AT154707B AT 154707 B AT154707 B AT 154707B AT 154707D A AT154707D A AT 154707DA AT 154707 B AT154707 B AT 154707B
Authority
AT
Austria
Prior art keywords
aluminum
production
chloride
aluminum chloride
zinc chloride
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ruhrchemie 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.)
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Publication date
Application filed by Ruhrchemie Ag filed Critical Ruhrchemie Ag
Application granted granted Critical
Publication of AT154707B publication Critical patent/AT154707B/en

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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von sublimiertem Aluminiumchlorid. 



   Es ist an sich bekannt, Aluminium, z. B. in Form von Spänen, mit gasförmiger Salzsäure umzusetzen. Diese Reaktion verläuft jedoch erst bei höheren Temperaturen. Um brauchbare Reaktiongeschwindigkeiten zu erzielen, sind Temperaturen von 500 bis 6000 erforderlich und ausserdem werden nur 65 bis 75% des Aluminiums in Aluminiumchlorid umgewandelt, während der Rest des Aluminiums eine   schlackenähnliche   nicht mehr reagierende Masse bildet. 



   Man hat schon vorgeschlagen, das Aluminium im geschmolzenen Zinkchlorid zu suspendieren und durch Einleiten von Chlorwasserstoffgas in Aluminiumchlorid umzuwandeln. Dabei verläuft zwar die Reaktion schon bei niederen Temperaturen, jedoch ergeben sich auf diese Weise eine Reihe von Schwierigkeiten. 



   Es wurde nun gefunden, dass   ein Überschuss   an Zinkchlorid keineswegs erforderlich ist, vielmehr genügen schon sehr kleine Mengen Zinkchlorid, um metallisches Aluminium für Chlorwasserstoff leicht angreifbar zu machen. So tritt z. B. nach Zusatz von nur 1%   Zn Cl2 schon ùei   300 bis   5000   eine kräftige Reaktion ein und das Aluminium wird zu über 90% in glatter Reaktion in AlCl3 übergeführt. Eine merkliche Beeinflussung der Aluminiumchloridbildung nach dem erfindungsgemässen Verfahren tritt schon bei Anwendung von 0-1% Zinkchlorid auf. Dagegen ist es im allgemeinen nicht erforderlich, den Zusatz von Zinkchlorid über etwa 10% zu steigern. Dabei ist es nicht einmal notwendig, das Zinkchlorid mit dem Aluminium zu mischen. Es genügt z.

   B., dass das Chlorwasserstoffgas bei erhöhter Temperatur, bevor es an das Aluminium gelangt, über Zinkchlorid geleitet wird, wobei das Gas kleine Mengen von   Zinkchlorid mitführt, welche ausreichend   sind, um die Umsetzung des Aluminiums zu beschleunigen. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the production of sublimed aluminum chloride.



   It is known per se to use aluminum, e.g. B. in the form of chips to implement with gaseous hydrochloric acid. However, this reaction only takes place at higher temperatures. In order to achieve useful reaction rates, temperatures of 500 to 6000 are required and in addition only 65 to 75% of the aluminum is converted into aluminum chloride, while the rest of the aluminum forms a slag-like, non-reactive mass.



   It has already been proposed to suspend the aluminum in the molten zinc chloride and to convert it into aluminum chloride by introducing hydrogen chloride gas. Although the reaction takes place even at low temperatures, a number of difficulties arise in this way.



   It has now been found that an excess of zinc chloride is by no means necessary; rather, even very small amounts of zinc chloride are sufficient to make metallic aluminum easily vulnerable to hydrogen chloride. So occurs z. For example, after adding only 1% Zn Cl2, a vigorous reaction starts at 300 to 5000 and over 90% of the aluminum is converted into AlCl3 in a smooth reaction. A noticeable influence on the aluminum chloride formation according to the process according to the invention already occurs when using 0-1% zinc chloride. In contrast, it is generally not necessary to increase the addition of zinc chloride above about 10%. It is not even necessary to mix the zinc chloride with the aluminum. It is enough z.

   For example, the hydrogen chloride gas is passed over zinc chloride at an elevated temperature before it reaches the aluminum, with the gas entraining small amounts of zinc chloride which are sufficient to accelerate the conversion of the aluminum.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von sublimierten Aluminiumchlorid durch Umsetzung von metallischem Aluminium mit Chlorwasserstoffgas bei hohen, mehrere 100 betragenden Temperaturen, dadurch gekennzeichnet, dass dem umzusetzenden Aluminium etwa 0'1 bis 10% Zinkchlorid zugefügt werden. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of sublimed aluminum chloride by reacting metallic aluminum with hydrogen chloride gas at high temperatures of several hundred, characterized in that about 0.1 to 10% zinc chloride is added to the aluminum to be converted. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT154707D 1936-06-22 1937-05-25 Process for the production of sublimed aluminum chloride. AT154707B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE154707T 1936-06-22

Publications (1)

Publication Number Publication Date
AT154707B true AT154707B (en) 1938-10-25

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ID=29412442

Family Applications (1)

Application Number Title Priority Date Filing Date
AT154707D AT154707B (en) 1936-06-22 1937-05-25 Process for the production of sublimed aluminum chloride.

Country Status (1)

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AT (1) AT154707B (en)

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