DE299013C - - Google Patents

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Publication number
DE299013C
DE299013C DENDAT299013D DE299013DA DE299013C DE 299013 C DE299013 C DE 299013C DE NDAT299013 D DENDAT299013 D DE NDAT299013D DE 299013D A DE299013D A DE 299013DA DE 299013 C DE299013 C DE 299013C
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DE
Germany
Prior art keywords
naphthalene
hydrogen
main patent
treated
addition
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.)
Active
Application number
DENDAT299013D
Other languages
German (de)
Publication of DE299013C publication Critical patent/DE299013C/de
Active legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/02Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
    • C07C5/10Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of aromatic six-membered rings

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

Description

In dem Hauptpatent ist ein Verfahren beschrieben zur Hydrierung von Naphthalin, dadurch gekennzeichnet, daß man Naphthalin in Damp'fform mit fein verteilten oder leicht schmelzbaren Metallen, Metallegierungen oder solchen Metallverbindungen, welche das Metall nur locker an einen nicht sauren Rest gebunden enthalten, entweder für^sich allein oder im Gemisch mit fein verteilten oder porösen Materialien, wie Fullererde u. dgl., in innige Berührung bringt und das so vorgereinigte Produkt unter Zusatz von Katalysatoren mit Wasserstoff behandelt.The main patent describes a process for the hydrogenation of naphthalene, thereby characterized in that one naphthalene in Damp'fform with finely divided or easily fusible metals, metal alloys or such metal compounds that the metal contained only loosely bound to a non-acidic residue, either on their own or in a mixture with finely divided or porous materials, such as fuller's earth and the like brings intimate contact and the pre-cleaned product with the addition of catalysts treated with hydrogen.

Es wurde nun gefunden, daß man den gleichen Effekt erreicht, wenn man Naphthalin in organischen Lösungsmitteln gelöst mit den gleichen Reinigungsmitteln behandelt. Beispielsweise werden 100 kg technisches Naphthalin in etwa der gleichen Menge Tetrahydronaphthalin zur Lösung gebracht und mit etwa ι kg Natrium bei 150° bis 200°. verrührt. Nach zwei- bis dreistündiger Behandlung wird das Produkt vom Rückstand abdestilliert oder abgepreßt und in Lösung unter Zusatz eines der industriell zur Anwendung kommenden wirksamen Katalysatoren mit Wasserstoff behandelt. Nach Aufnahme von etwa 3 kg Wasserstoff ist auch das Naphthalin in Tetrahydronaphthalin verwandelt. Dasselbe wird durch Filtration oder Dest; llation von dem Katalysator abgetrennt, der seinerseits für weitere Hydrierungen ohne weiteres verwendbar bleibt.It has now been found that the same effect is achieved if naphthalene is dissolved in organic solvents and treated with the same cleaning agents. For example, 100 kg of technical naphthalene are dissolved in approximately the same amount of tetrahydronaphthalene and with approximately ι kg of sodium at 150 ° to 200 °. stirred. After two to three hours of treatment, the product is distilled off or pressed off from the residue and treated with hydrogen in solution with the addition of one of the active catalysts used industrially. After absorbing about 3 kg of hydrogen, the naphthalene is also converted into tetrahydronaphthalene. The same is done by filtration or distillate ; Ilation separated from the catalyst, which in turn remains readily usable for further hydrogenations.

Bei Anwendung von Lösungsmitteln, welche, wie beispielsweise Petroleumdestillate (Benzin), Benzol, Solventnaphtha und andere Teerölfraktionen u. dgl., nicht aus Hydrierungsprodukten des Naphthalins bestehen, lassen sich die Lö- sungsmittel durch fraktionierte Destillation von dem gereinigten Naphthalin gegebenenfalls auch erst nach der Hydrierung selbst abtrennen. When using solvents which, such as petroleum distillates (gasoline), Benzene, solvent naphtha and other tar oil fractions and the like, not from hydrogenation products of naphthalene, the solvents can be removed by fractional distillation from the purified naphthalene, if appropriate, only separate them after the hydrogenation itself.

Claims (1)

Patent-Anspruch :Patent claim: Abänderung des durch das Hauptpatent geschützten Verfahrens zur Herstellung hydrierter Naphthaline, dadurch gekennzeichnet, daß man das zur Verwendung kommende Naphthalin in organischen Lösungsmitteln gelöst der in dem Hauptpatent beschriebenen Vorreinigung unterwirft und das so vorgereinigte Produkt unter Zusatz von Katalysatoren mit Wasserstoff behandelt.Modification of the manufacturing process protected by the main patent Hydrogenated naphthalenes, characterized in that the for use coming naphthalene dissolved in organic solvents in the main patent Subject to pre-cleaning described and the product pre-cleaned in this way treated with hydrogen with the addition of catalysts.
DENDAT299013D Active DE299013C (en)

Publications (1)

Publication Number Publication Date
DE299013C true DE299013C (en)

Family

ID=553155

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
DE (1) DE299013C (en)

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