DE842041C - Process for the preparation of thionyl chloride - Google Patents

Process for the preparation of thionyl chloride

Info

Publication number
DE842041C
DE842041C DEB5927D DEB0005927D DE842041C DE 842041 C DE842041 C DE 842041C DE B5927 D DEB5927 D DE B5927D DE B0005927 D DEB0005927 D DE B0005927D DE 842041 C DE842041 C DE 842041C
Authority
DE
Germany
Prior art keywords
sulfur
thionyl chloride
chlorine
chloride
preparation
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
DEB5927D
Other languages
German (de)
Inventor
Gerhardt Dr Koudela
Karl Dr Wintersberger
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to DEB5927D priority Critical patent/DE842041C/en
Application granted granted Critical
Publication of DE842041C publication Critical patent/DE842041C/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
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/45—Compounds containing sulfur and halogen, with or without oxygen
    • C01B17/4561—Compounds containing sulfur, halogen and oxygen only
    • C01B17/4584—Thionyl chloride (SOCl2)

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

Description

Verfahren zur Herstellung von Thionylchlorid Thionylchlorid läßt sich aus Schwefeldichlorid und Schwefeltrioxyd nach der Gleichung SC12 -f- S03 > S0C12 + Sog oder aus Schwefeldioxyd, Chlor und Kohlenoxyd in Gegenwart von Katalysatoren nach derGleichung Sog + C12 + Co r soC12 + Co, herstellen. Bei beiden Verfahren ist es nachteilig, daß neben Thionylchlorid ein gasförmiger Stoff entsteht, was bei der leichten Flüchtigkeit des Thionylchlorids Anlaß zu Verlusten gibt. Es wurde nun gefunden, daB sich Thionylchlorid ohne die Bildung gasförmiger Nebenstoffe in glatter Umsetzung bildet, wenn man Schwefeldichlorid, Chlor und Schwefeldioxyd, vorzugsweise in äquimolekularem Verhältnis nach der Gleichung SC12 + S02 + C4 > 2 S0C12 bei erhöhter Temperatur über Katalysatoren leitet. Vorteilhaft arbeitet man bei Temperaturen von etwa 17o bis 2oo°. Als Katalysator ist beispielsweise Aktivkohle gut geeignet. An Stelle von Schwefeldioxyd und Chlor kann man auch Sulfurylchlorid verwenden. Die Umsetzung läßt sich dann durch die Gleichung SC12 -1- S02C12 ' 2 SOC12 . ausdrücken. Ferner kann man das Schwefeldichlorid auch durch entsprechende Mengen Schwefelc'hlorür und Chlor ersetzen: S2C12 + 2 S02 -I- 3 C4 -) - 4 SOC12. Für die Ausbeute an Thionylchlorid ist es in manchen Fällen zweckmäßig, die Umsetzung unter erhöhtem Druck vorzunehmen.Process for the preparation of thionyl chloride Thionyl chloride can be prepared from sulfur dichloride and sulfur trioxide according to the equation SC12 -f- S03> S0C12 + suction or from sulfur dioxide, chlorine and carbon oxide in the presence of catalysts according to the equation Suction + C12 + Co r soC12 + Co, produce. In both processes it is disadvantageous that a gaseous substance is formed in addition to thionyl chloride, which gives rise to losses given the slight volatility of the thionyl chloride. It has now been found that thionyl chloride is formed in smooth reaction without the formation of gaseous secondary substances if sulfur dichloride, chlorine and sulfur dioxide are used, preferably in an equimolecular ratio according to the equation SC12 + S02 + C4> 2 S0C12 passes over catalysts at elevated temperature. It is advantageous to work at temperatures of around 170 to 200 °. Activated carbon, for example, is well suited as a catalyst. Sulfuryl chloride can also be used in place of sulfur dioxide and chlorine. The implementation can then be given by the equation SC12 -1- S02C12 ' 2 SOC12. to express. Furthermore, the sulfur dichloride can also be replaced by appropriate amounts of sulfuric chloride and chlorine: S2C12 + 2 S02 -I- 3 C4 - ) - 4 SOC12. For the yield of thionyl chloride, it is advantageous in some cases to carry out the reaction under increased pressure.

Beispiel Ein äquimolekulares Gemisch von Schwefeldichlorid und Sulfurylchlorid wird verdampft und in langsamem Strom durch ein Rohr geleitet, in dem sich auf igo° erhitzte Aktivkohle befindet. In einem an das Rohr angeschlossenen Kühler scheidet sich ein Kondensat ab, das neben Thionylchlorid 15010 Schwefeldichlorid und. außerdem 9°/o Schwefeldioxyd und Chlor gelöst enthält. Die gelösten Gase werden durch Erhitzen ausgetrieben und für die Umsetzung wieder nutzbar gemacht. Das nicht umgesetzte Schwefeldichlorid kann durch Einwirkung von Schwefeltrioxyd auf das Gemisch nachträglich noch in Thionylchlorid übergeführt wer-_den, oder man wandelt es durch Einwirkung von Schwefel in Schwefelchlorür um, das nach Abtrennung durch fraktionierte Destillation ebenfalls für, das Verfahren verwendet werden kann.Example An equimolecular mixture of sulfur dichloride and sulfuryl chloride is evaporated and passed in a slow stream through a pipe in which igo ° heated activated carbon is located. Separates in a cooler connected to the pipe a condensate, which in addition to thionyl chloride 15010 sulfur dichloride and. aside from that 9 per cent. Contains dissolved sulfur dioxide and chlorine. The dissolved gases are produced by heating driven out and made usable again for implementation. The not implemented Sulfur dichloride can be added to the mixture as a result of the action of sulfur trioxide be converted into thionyl chloride, or it is converted by action from sulfur to sulfuric chloride after separation by fractional distillation also for, the procedure can be used.

Claims (4)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Thionylchlorid, dadurch gekennzeichnet, daß man ein vorzugsweise äquimolekulares Gemisch von, Schwefeldichlorid, Chlor und Schwefeldioxyd bei erhöhter Temperatur über Katalysatoren leitet. PATENT CLAIMS: i. Process for the preparation of thionyl chloride, characterized in that a preferably equimolecular mixture of sulfur dichloride, chlorine and sulfur dioxide is passed over catalysts at an elevated temperature. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daB man an Stelle von Chlor und Schwefeldioxyd Sulfurylchlorid verwendet. 2. Procedure according to claim i, characterized in that instead of chlorine and sulfur dioxide Sulfuryl chloride used. 3. Verfahren nach Anspruch i und 2, dadurch gekennzeichnet, daß man an Stelle von Schwefeldichlorid entsprechende Mengen Schwefelchlorür und Chlor verwendet. 3. The method according to claim i and 2, characterized in that that instead of sulfur dichloride, corresponding amounts of sulfur chloride and Used chlorine. 4. Verfahren nach Anspruch i bis 3, dadurch gekennzeichnet, daB man die Umsetzung unter erhöhtem Druck durchführt.4. The method according to claim i to 3, characterized in that the reaction is carried out under increased pressure.
DEB5927D 1944-04-14 1944-04-14 Process for the preparation of thionyl chloride Expired DE842041C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB5927D DE842041C (en) 1944-04-14 1944-04-14 Process for the preparation of thionyl chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB5927D DE842041C (en) 1944-04-14 1944-04-14 Process for the preparation of thionyl chloride

Publications (1)

Publication Number Publication Date
DE842041C true DE842041C (en) 1952-06-23

Family

ID=6954258

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB5927D Expired DE842041C (en) 1944-04-14 1944-04-14 Process for the preparation of thionyl chloride

Country Status (1)

Country Link
DE (1) DE842041C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108467017A (en) * 2018-06-05 2018-08-31 中国天辰工程有限公司 A kind of sulfur dioxide gasification process for thionyl chloride production
CN116715191A (en) * 2023-08-08 2023-09-08 浙江百能科技有限公司 Sulfuric acid phase decomposition process and system for cyclic hydrogen production by sulfur and iodine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108467017A (en) * 2018-06-05 2018-08-31 中国天辰工程有限公司 A kind of sulfur dioxide gasification process for thionyl chloride production
CN108467017B (en) * 2018-06-05 2021-07-30 中国天辰工程有限公司 Sulfur dioxide vaporization process for producing thionyl chloride
CN116715191A (en) * 2023-08-08 2023-09-08 浙江百能科技有限公司 Sulfuric acid phase decomposition process and system for cyclic hydrogen production by sulfur and iodine
CN116715191B (en) * 2023-08-08 2023-10-27 浙江百能科技有限公司 Sulfuric acid phase decomposition process and system for cyclic hydrogen production by sulfur and iodine

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