DE113719C - - Google Patents
Info
- Publication number
- DE113719C DE113719C DENDAT113719D DE113719DA DE113719C DE 113719 C DE113719 C DE 113719C DE NDAT113719 D DENDAT113719 D DE NDAT113719D DE 113719D A DE113719D A DE 113719DA DE 113719 C DE113719 C DE 113719C
- Authority
- DE
- Germany
- Prior art keywords
- acetone
- isopropyl alcohol
- acid
- acidic
- cathode
- 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
Links
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- KFZMGEQAYNKOFK-UHFFFAOYSA-N iso-propanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 5
- 230000002378 acidificating Effects 0.000 claims description 4
- 230000001603 reducing Effects 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 14
- 239000002253 acid Substances 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- IVDFJHOHABJVEH-UHFFFAOYSA-N Pinacol Chemical compound CC(C)(O)C(C)(C)O IVDFJHOHABJVEH-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 239000003929 acidic solution Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-Methyl-2,4-pentanediol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L Barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L Copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B3/00—Electrolytic production of organic compounds
- C25B3/20—Processes
- C25B3/25—Reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
PATENTAMT.PATENT OFFICE.
KLASSE 12 o.CLASS 12 o.
Aceton ist sowohl in saurer, als auch in alkalischer wässeriger Lösung mittelst der Reductionswirkung des elektrischen Stromes leicht in Isopropylalkohol und Pinakon überführbar. Auf Grund dieser Thatsache (über frühere mifslungene Versuche von Kauffmann, s. Zeitschrift für Elektrotechnik II — 1895 — S. 365) läfst sich folgendes Verfahren zur Darstellung der oben erwähnten beiden Verbindungen benutzen.Acetone is in acidic as well as in alkaline aqueous solution by means of the reducing effect of the electric current can easily be converted into isopropyl alcohol and pinacon. On the basis of this fact (about earlier unsuccessful attempts by Kauffmann, see Zeitschrift für Elektrotechnik II - 1895 - p. 365) the following procedure can be used to represent the above two Use connections.
Aceton wird in verdünnter Schwefelsäure (oder einer anderen Mineralsäure) oder auch in verdünnter Alkalilauge gelöst. Die Lösung bringt man in den durch ein Diaphragma abgetrennten Kathodenraum eines Elektrolysirapparates, dessen Anodenraum verdünnte Säure bezw. Alkalilauge enthält. Als Kathoden verwendbar sind Metalle und Kohle, von Metallen vorzugsweise Blei, als Anoden aufser Kohle alle unlöslichen Metalle.Acetone is in dilute sulfuric acid (or another mineral acid) or also dissolved in dilute alkali lye. The solution is brought into the separated by a diaphragm Cathode compartment of an Elektrolysirapparates, the anode compartment bezw dilute acid. Contains alkali. Can be used as cathodes are metals and carbon, of metals preferably lead, as anodes other than carbon are all insoluble metals.
Statt mit Säure oder Lauge kann man auch mit einer Alkä*lisalzlösung im Kathoden- und Anodenrauni arbeiten. Da man dann jedoch auf der einen Seite des Diaphragmas im Verlaufe des Processes eine saure und auf der anderen eine alkalische Flüssigkeit erhält, so ist in Anbetracht der hierdurch bedingten gröfseren Inanspruchnahme des Diaphragmenmaterials die ersterwähnte Arbeitsweise vorzuziehen. Instead of using acid or lye, you can also use an alkali salt solution in the cathode and Anodenrauni work. However, since you are then on one side of the diaphragm in the course the process receives an acidic liquid and an alkaline liquid on the other, so is in view of the greater use of the diaphragm material caused by this the first-mentioned working method is preferable.
Man ist bezüglich der Mengenverhältnisse von Aceton, Wasser und Säure (bezw. Alkali) natürlich an keine bestimmten Grenzen gebunden, insoweit sich nicht eine zu grofse Concentration der Säure im Kathodenraume durch die Zersetzlichkeit des Acetons selbst verbietet, während andererseits die Abnahme der Leitfähigkeit bei Abnahme der vorhandenen Säuremenge auch nach unten hin eine Grenze steckt.Regarding the proportions of acetone, water and acid (or alkali) of course not bound by any definite limits, insofar as there is not too great a concentration prohibits the acid in the cathode compartment due to the decomposition of the acetone itself, while, on the other hand, the decrease in conductivity with a decrease in the amount of acid present there is also a limit at the bottom.
Zu bemerken ist noch, dafs saure Lösungen bei weitem bessere Ausbeuten, besonders an Pinakon, als alkalische Lösungen geben.It should also be noted that acidic solutions give far better yields, especially at Pinacon, give as alkaline solutions.
Als vortheilhaft hat sich folgende Zusammensetzung erwiesen:The following composition has proven to be advantageous:
A. Für saure Lösungen:
Kathodenlauge 9,0 kg Aceton,A. For acidic solutions:
Cathode liquor 9.0 kg acetone,
5,7 - Schwefelsäure, 660B., 16,5 - Wasser;·5.7 - sulfuric acid, 66 0 B., 16.5 - water; ·
Anodenlauge 1,0 - Schwefelsäure, 660B., 10,0 - Wasser.Anode liquor 1.0 - sulfuric acid, 66 0 B., 10.0 - water.
B. Für alkalische Lösungen:B. For alkaline solutions:
Kathodenlauge 5,6 kg Aceton,Cathode liquor 5.6 kg acetone,
1,0 - Natriumhydroxyd,
21,0 - Wasser;1.0 - sodium hydroxide,
21.0 - water;
Anodenlauge 3,0 - Natriumhydroxyd,Anode liquor 3.0 - sodium hydroxide,
10,0 - Wasser.10.0 - water.
(Hier mufs während des Processes Natronlauge zur Anodenlauge zugegeben werden.)(Here caustic soda must be added to the anode liquor during the process.)
Man elektrolysirt mit 4 A. pro qdm Kathodenfläche, jedoch sind sowohl höhere, wie geringere Stromdichten auch mit Erfolg verwendbar. One electrolyzes with 4 A. per square meter of cathode surface, but both higher and lower current densities can also be used successfully.
Die Abscheidung des Isopropylalkohols und des Pinakons aus der Kathodenlauge geschieht mittelst kohlensauren Kalis, wobei man die sauren Laugen vorher mit Natriumhydroxyd oder einem anderen Alkali oder Erdalkali abstumpfen kann. Statt der Potasche sind natürlich auch andere wasserbindende Substanzen, z. B. wasserfreies Kupfersulfat, Kalk,The isopropyl alcohol and pinacone are separated from the cathode liquor by means of carbonated potash, whereby the acidic lyes are previously treated with sodium hydroxide or another alkali or alkaline earth can dull. Instead of the potash are of course other water-binding substances, e.g. B. anhydrous copper sulphate, lime,
Baryt u. s. w. verwendbar. Die mechanisch von der wässerigen Lauge getrennte Lösung von Pinakon in Isopropylalkohol wird der fractionirten Destillation unterworfen, bei welcher das Pinakon zuletzt übergeht.Barite and so on can be used. The solution of mechanically separated from the aqueous alkali Pinacone in isopropyl alcohol is subjected to fractional distillation, in which the Pinakon passes last.
Man erhält so bei der Elektrolyse saurer Lösungen ungefähr 40 kg Isopropylalkohol und 20 kg Pinakon aus 100 kg Aceton, bei der Elektrolyse alkalischer Lösungen aus 100 kg Aceton ungefähr 30 kg Isopropylalkohol und nur sehr wenig Pinakon.In the electrolysis of acidic solutions, about 40 kg of isopropyl alcohol are obtained and 20 kg pinacon from 100 kg acetone, in the electrolysis of alkaline solutions 100 kg acetone about 30 kg isopropyl alcohol and very little pinacon.
Isopropylalkohol und Pinakon konnten bisher praktisch nur durch Reduction -von Aceton mittelst metallischen Natriums erhalten werden, eine Darstellungsweise, die wenig ausgiebig, theuer - und wegen ihrer- Gefährlichkeit nicht in gröfserem Mafsstabe ausführbar ist. Das beschriebene elektrolytische Verfahren, das in jedem, beliebigen Mafsstabe ausgeführt werden kann, ist einfach', billig und ergiebig und gestattet nunmehr die Darstellung dieser bislang für praktische Verwendung zu kostspieligen Verbindungen in beliebigen Mengen zu verhältnifsmäfsig geringem Preise.So far, isopropyl alcohol and pinacone could practically only be achieved by reducing acetone can be obtained by means of metallic sodium, a mode of preparation which is little extensive, dear - and, because of their danger, not feasible on a larger scale is. The electrolytic process described, carried out on any scale can be is 'simple', cheap and economical and now allows the representation of this heretofore for practical use to expensive compounds in any amount at relatively low prices.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE113719C true DE113719C (en) |
Family
ID=383281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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Country Status (1)
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DE (1) | DE113719C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2422468A (en) * | 1942-07-04 | 1947-06-17 | Standard Oil Dev Co | Electrolytic production of pinacols |
US3984294A (en) * | 1974-08-28 | 1976-10-05 | Basf Aktiengesellschaft | Electrochemical manufacture of pinacol |
-
0
- DE DENDAT113719D patent/DE113719C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2422468A (en) * | 1942-07-04 | 1947-06-17 | Standard Oil Dev Co | Electrolytic production of pinacols |
US3984294A (en) * | 1974-08-28 | 1976-10-05 | Basf Aktiengesellschaft | Electrochemical manufacture of pinacol |
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