DE1225645B - Process for the separation of hydrogen peroxide from such and sulfuric acid-containing crude tert-butyl hydroperoxide - Google Patents

Process for the separation of hydrogen peroxide from such and sulfuric acid-containing crude tert-butyl hydroperoxide

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Publication number
DE1225645B
DE1225645B DEU9378A DEU0009378A DE1225645B DE 1225645 B DE1225645 B DE 1225645B DE U9378 A DEU9378 A DE U9378A DE U0009378 A DEU0009378 A DE U0009378A DE 1225645 B DE1225645 B DE 1225645B
Authority
DE
Germany
Prior art keywords
hydrogen peroxide
sulfuric acid
butyl hydroperoxide
tert
separation
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.)
Pending
Application number
DEU9378A
Other languages
German (de)
Inventor
Dipl-Chem Dr Gottfr Nettesheim
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.)
Union Rheinische Braunkohlen Kraftstoff AG
Original Assignee
Union Rheinische Braunkohlen Kraftstoff 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 Union Rheinische Braunkohlen Kraftstoff AG filed Critical Union Rheinische Braunkohlen Kraftstoff AG
Priority to DEU9378A priority Critical patent/DE1225645B/en
Publication of DE1225645B publication Critical patent/DE1225645B/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C407/00Preparation of peroxy compounds
    • C07C407/003Separation; Purification; Stabilisation; Use of additives

Landscapes

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

Description

Verfahren zur Abtrennung von Wasserstoffperoxyd aus solches und Schwefelsäure enthaltendem rohem tert.-Butylhydroperoxyd Bei der Darstellung von höherprozentigem tert.-Butylhydroperoxyd aus tert.-Butanol und Wasserstoffperoxyd in Gegenwart von Schwefelsäure arbeitet man im allgemeinen mit Wasserstoffperoxydüberschuß. Das Reaktionsprodukt tert.-Butylhydroperoxyd ist in der Reaktionslösung nur mäßig löslich. Es scheidet sich daher bei entsprechenden Konzentrationen als obere Schicht ab und kann in dieser Form abgezogen werden. Dieses Hydroperoxyd enthält neben Di-tert.-Butylperoxyd geringe Mengen an Schwefelsäure, Wasser und tert.-Butanol sowie Wasserstoffperoxyd.Process for the separation of hydrogen peroxide from such and sulfuric acid containing crude tert-butyl hydroperoxide in the representation of higher percentage tert-Butyl hydroperoxide from tert-butanol and hydrogen peroxide in the presence of Sulfuric acid is generally used with an excess of hydrogen peroxide. The reaction product Tert-butyl hydroperoxide is only sparingly soluble in the reaction solution. It part therefore at the appropriate concentrations as the upper layer and can be in this Shape can be peeled off. This hydroperoxide contains small amounts of di-tert-butyl peroxide Amounts of sulfuric acid, water and tert-butanol and hydrogen peroxide.

So befinden sich in den bei der kontinuierlichen Herstellung von tert. -Butylhydroperoxyd aus tert. So are located in the continuous production of tert. -Butyl hydroperoxide from tert.

Butanol und 600/,igem Wasserstoffperoxyd anfallenden etwa 77- bis 800/0eigen Lösungen von tert.-Butylhydroperoxyd etwa 1 bis 2°/o Wasserstoffperoxyd. Bei einer Verwendung des tert.-Butylhydroperoxyds für weitere chemische Umsetzungen, wie z. B. zur Darstellung von 2,2-Bis-(tert.-butylperoxyd)-butan aus Methyläthylketon und tert.-Butylhydroperoxyd, ist aber die Anwesenheit derartiger Mengen ap Wasserstoffperoxyd wegen unerwünschter Nebenreaktionen zu vermeiden. Man hat daher das rohe tert.-Butylhydroperoxyd nach Neutralisation der geringen Mengen an gelösten Säuren destillativ oder über die Alkaliverbindungen gereinigt, wobei naturgemäß erhebliche Verluste an Hydroperoxyd auftreten.Butanol and 600% strength hydrogen peroxide produced about 77 to 800/0 own solutions of tert-butyl hydroperoxide about 1 to 2% hydrogen peroxide. When using the tert-butyl hydroperoxide for further chemical reactions, such as B. for the preparation of 2,2-bis (tert-butyl peroxide) butane from methyl ethyl ketone and tert-butyl hydroperoxide, but the presence of such amounts ap hydrogen peroxide to avoid because of undesirable side reactions. You therefore have the crude tert-butyl hydroperoxide after neutralization of the small amounts of dissolved acids by distillation or over the alkali compounds cleaned, with naturally considerable losses of hydroperoxide appear.

Es wurde nun überraschenderweise gefunden, daß das Wasserstoffperoxyd aus solches und Schwefelsäure enthaltendem rohem tert.-Butylhydroperoxyd in einfacher Weise praktisch restlos abgetrennt werden kann, wenn man dieses Rohprodukt nach der Neutralisation der Schwefelsäure mit Alkalilauge mit überschüssigem Erdalkalioxyd oder -hydroxyd behandelt und erforderlichenfalls mit einem Filterhilfsmittel klärt. It has now surprisingly been found that the hydrogen peroxide from such and sulfuric acid containing crude tert-butyl hydroperoxide in a simple Way can be separated practically completely, if this crude product after the neutralization of sulfuric acid with alkali with excess alkaline earth oxide or hydroxide treated and, if necessary, clarified with a filter aid.

Angesichts der bekannten Schwerlöslichkeit der Erdalkalisalze von Peroxyden in Wasser war nicht vorauszusehen, daß es auf diese Weise gelingt, Wasserstoffperoxyd als Erdalkalisalz selektiv aus Butylhydroperoxydlösung abzutrennen, da auch die Bildung von schwerlöslichen Erdalkalihydroperoxydsalzen zu erwarten war. Die Erdalkaliverbindungen werden z. B. in stückiger Form in einer Säule angeordnet und das rohe Butylhydroperoxyd darüber filtriert. Im Anschluß an die Behandlung mit den Erdalkaliverbindungen ist eine Filtration z. B. über Kieselgur, eventuell unter Druck, von Vorteil, um mitgerissene anorganische Verbindungen zu entfernen. Man kann die Erdalkalioxyde bzw. -hydroxyde auch in wäßriger Lösung oder Suspension anwenden, jedoch treten hierbei unter Umständen Verluste an tert.-Butylhydroperoxyd wegen seiner Wasserlöslichkeit auf. Von den Erdalkaliverbindungen werden am vorteilhaftesten stückiges Calciumoxyd oder -hydroxyd in einer Säule eingesetzt. Vor der Behandlung mit Erdalkalien ist es erforderlich, die von der Herstellung her vorhandene Schwefelsäure beispielsweise mit 400/,der Natronlauge zu neutralisieren und die wäßrige Schicht abzutrennen. Anderenfalls können Erdalkaliverbindungen gelöst bzw. suspendiert werden, die später auflocken bzw. nicht klar filtrierbar sind. In view of the known poor solubility of the alkaline earth salts of Peroxides in water could not be foreseen that hydrogen peroxide would succeed in this way to be separated selectively from butyl hydroperoxide solution as alkaline earth salt, since the Formation of poorly soluble alkaline earth hydroperoxide salts was to be expected. The alkaline earth compounds are z. B. arranged in lump form in a column and the crude butyl hydroperoxide filtered over it. Following the treatment with the alkaline earth compounds a filtration e.g. B. over kieselguhr, possibly under pressure, beneficial to entrained remove inorganic compounds. One can use the alkaline earth oxides or hydroxides also use in aqueous solution or suspension, however, this may occur Loss of tert-butyl hydroperoxide due to its water solubility. Of the Alkaline earth compounds are most advantageously lumpy calcium oxide or hydroxide used in a column. Before treatment with alkaline earths, it is necessary to the sulfuric acid present from the production, for example, with 400 /, the To neutralize sodium hydroxide solution and separate the aqueous layer. Otherwise alkaline earth compounds can be dissolved or suspended, which later loosen or are not clearly filterable.

Beispiel Ein schwefelsäurehaltiges Rohprodukt mit 79,2°/o tert.-Butylhydroperoxyd und 1,4 01o Wasserstoffperoxyd wurde in bekannter Weise mit Natronlauge neutralisiert. Dabei sank der Gehalt an Wasserstoffperoxyd auf 0,89 °/0. Das so erhaltene Produkt wurde 20 bzw. 40 Minuten mit stückigem Calciumoxyd behandelt und anschließend über Kieselgur filtriert. Example A crude product containing sulfuric acid with 79.2% tert-butyl hydroperoxide and 1.4 01o hydrogen peroxide was neutralized in a known manner with sodium hydroxide solution. The hydrogen peroxide content fell to 0.89 per cent. The product thus obtained was treated with lumpy calcium oxide for 20 or 40 minutes and then over Diatomaceous earth filtered.

Die sich hiernach ergebenden Wasserstoffperoxydgehalte waren 0,15 bzw. 0,05 O/o.The resulting hydrogen peroxide contents were 0.15 and 0.05 O / o, respectively.

Claims (2)

Patentansptüche: 1. Verfahren zur Abtrennung von Wasserstoffperoxyd aus solches und Schwefelsäure enthaltendem rohem tert.-Butylhydroperoxyd, d a d u r c h gekennzeichnet, daß man dieses Rohprodukt nach der Neutralisation der Schwefelsäure mit Alkalilauge mit überschüssigem Erdalkalioxyd oder -hydroxyd behandelt und erforderlichenfalls mit einem Filtrierhilfsmittel klärt. Patent claims: 1. Process for the separation of hydrogen peroxide from such and crude tert-butyl hydroperoxide containing sulfuric acid, d a d u r c h characterized that this crude product is obtained after the sulfuric acid has been neutralized treated with alkali with excess alkaline earth oxide or hydroxide and if necessary clarifies with a filter aid. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man vorzugsweise stückiges Calciumoxyd bzw. -hydroxyd verwendet. 2. The method according to claim 1, characterized in that one is preferably Lumpy calcium oxide or hydroxide used. In Betracht gezogene Druckschriften: K. A. H of m a n n, Lehrbuch der Anorganischen Chemie, 7. Auflage (1931), S. 78. Publications considered: K. A. H of m a n n, textbook der Inorganischen Chemie, 7th edition (1931), p. 78.
DEU9378A 1962-11-09 1962-11-09 Process for the separation of hydrogen peroxide from such and sulfuric acid-containing crude tert-butyl hydroperoxide Pending DE1225645B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEU9378A DE1225645B (en) 1962-11-09 1962-11-09 Process for the separation of hydrogen peroxide from such and sulfuric acid-containing crude tert-butyl hydroperoxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU9378A DE1225645B (en) 1962-11-09 1962-11-09 Process for the separation of hydrogen peroxide from such and sulfuric acid-containing crude tert-butyl hydroperoxide

Publications (1)

Publication Number Publication Date
DE1225645B true DE1225645B (en) 1966-09-29

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Application Number Title Priority Date Filing Date
DEU9378A Pending DE1225645B (en) 1962-11-09 1962-11-09 Process for the separation of hydrogen peroxide from such and sulfuric acid-containing crude tert-butyl hydroperoxide

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DE (1) DE1225645B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449217A (en) * 1968-01-05 1969-06-10 Halcon International Inc Process of buffering a neutralized t-butyl hydroperoxide during distillation
EP0135295A2 (en) * 1983-09-14 1985-03-27 Arco Chemical Technology, Inc. Purification of tertiary butyl hydroperoxide containing primary and secondary alkyl hydroperoxide contaminants

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449217A (en) * 1968-01-05 1969-06-10 Halcon International Inc Process of buffering a neutralized t-butyl hydroperoxide during distillation
EP0135295A2 (en) * 1983-09-14 1985-03-27 Arco Chemical Technology, Inc. Purification of tertiary butyl hydroperoxide containing primary and secondary alkyl hydroperoxide contaminants
EP0135295A3 (en) * 1983-09-14 1985-08-14 Atlantic Richfield Company Purification of tertiary butyl hydroperoxide containing primary and secondary alkyl hydroperoxide contaminants
US4584413A (en) * 1983-09-14 1986-04-22 Atlantic Richfield Company Purification of tertiary butyl hydroperoxide containing primary and secondary alkyl hydroperoxide contaminants

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