BE620496A - - Google Patents

Info

Publication number
BE620496A
BE620496A BE620496DA BE620496A BE 620496 A BE620496 A BE 620496A BE 620496D A BE620496D A BE 620496DA BE 620496 A BE620496 A BE 620496A
Authority
BE
Belgium
Prior art keywords
emi
toluol
cobalt
separated
oxidation
Prior art date
Application number
Other languages
French (fr)
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.)
Publication of BE620496A publication Critical patent/BE620496A/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

       

   <EMI ID=1.1> 

  
 <EMI ID=2.1> 

  
 <EMI ID=3.1> 

  
Comme catalyseurs pour ce procède d'oxydation, il a déjà été 

  
 <EMI ID=4.1> 

  
et ils sont pas entièrement satisfaisants du point de vue

  
 <EMI ID=5.1> 

  
 <EMI ID=6.1> 

  
dation du toluol avec des rendements élevés et sans introduire

  
 <EMI ID=7.1> 

  
les rendements par la formation de sous-produits irrécupérables. 

  
L'oxydation dure de deux à cinq heures suivant la vitesse de 

  
 <EMI ID=8.1>  On prépare les deux solutions séparément à la température ambiante et on les mélange, de préférence de telle façon que la

  
 <EMI ID=9.1> 

  
savon de couleur rouge-rouge violet, qui flotte sur la masse réactionnelle..

  
 <EMI ID=10.1> 

  
 <EMI ID=11.1> 

  
La dissolution s'effectue de préférence en deux temps. Dans un premier temps, on ajoute à la masse réaction-

  
 <EMI ID=12.1> 

  
et on bat la masse, en obtenant de cette façon une dissolution qui n'est pas complète. On sépare par décantation du toluol

  
 <EMI ID=13.1> 

  
 <EMI ID=14.1> 

  
 <EMI ID=15.1> 

  
thate. On ajoute ensuite la quantité de toluol nécessaire pour compléter la dissolution de l'énanthate de cobalt et on sépare

  
 <EMI ID=16.1> 

  
 <EMI ID=17.1> 

  
100 g d'énanthate de cobalt. 

  
 <EMI ID=18.1> 

  
 <EMI ID=19.1> 

  
 <EMI ID=20.1> 

  
 <EMI ID=21.1> 

  
 <EMI ID=22.1> 

  
 <EMI ID=23.1>  d'énanthate de cobalt* On ajoute alors 2.000 autres gracia&#65533;?" de !

  
 <EMI ID=24.1> 

  
On sépare 860 cm3 d'eau qui contiennent le reste du 

  
 <EMI ID=25.1> 

  
Le reste de la solution tolulque contient environ 

  
 <EMI ID=26.1> 

  
Etant donné que .l'eau séparée après les deux traite- .  monte par le toluol contient, outre le chlorure de sodium qui 

  
 <EMI ID=27.1> 

  
On décrira maintenant quelques exemples d'oxyda-  tion du toluol au moyen du catalyseur en question* 

  
 <EMI ID=28.1>  <EMI ID=29.1> 

  
un autoclave de 7 litres et on les maintient à la. température  <EMI ID=30.1> 

  
 <EMI ID=31.1> 

  
 <EMI ID=32.1>   <EMI ID=33.1> 



   <EMI ID = 1.1>

  
 <EMI ID = 2.1>

  
 <EMI ID = 3.1>

  
As catalysts for this oxidation process, it has already been

  
 <EMI ID = 4.1>

  
and they are not entirely satisfactory from the point of view

  
 <EMI ID = 5.1>

  
 <EMI ID = 6.1>

  
dation of toluol with high yields and without introducing

  
 <EMI ID = 7.1>

  
yields through the formation of irrecoverable by-products.

  
Oxidation lasts two to five hours depending on the speed of

  
 <EMI ID = 8.1> The two solutions are prepared separately at room temperature and mixed, preferably in such a way that the

  
 <EMI ID = 9.1>

  
red-red-violet soap, which floats on the reaction mass.

  
 <EMI ID = 10.1>

  
 <EMI ID = 11.1>

  
The dissolution is preferably carried out in two stages. First, we add to the reaction mass-

  
 <EMI ID = 12.1>

  
and the mass is beaten, obtaining in this way a dissolution which is not complete. The toluol is separated by decantation

  
 <EMI ID = 13.1>

  
 <EMI ID = 14.1>

  
 <EMI ID = 15.1>

  
thate. The quantity of toluol necessary to complete the dissolution of the cobalt enanthate is then added and the mixture is separated

  
 <EMI ID = 16.1>

  
 <EMI ID = 17.1>

  
100 g of cobalt enanthate.

  
 <EMI ID = 18.1>

  
 <EMI ID = 19.1>

  
 <EMI ID = 20.1>

  
 <EMI ID = 21.1>

  
 <EMI ID = 22.1>

  
 <EMI ID = 23.1> of cobalt enanthate * We then add another 2,000 gracia &#65533;? "of!

  
 <EMI ID = 24.1>

  
860 cm3 of water are separated which contain the rest of the

  
 <EMI ID = 25.1>

  
The remainder of the tolulque solution contains approximately

  
 <EMI ID = 26.1>

  
Since the water separated after the two treats. rises by toluol contains, in addition to sodium chloride which

  
 <EMI ID = 27.1>

  
Some examples of toluol oxidation by means of the catalyst in question will now be described *

  
 <EMI ID = 28.1> <EMI ID = 29.1>

  
a 7-liter autoclave and kept at the. temperature <EMI ID = 30.1>

  
 <EMI ID = 31.1>

  
 <EMI ID = 32.1> <EMI ID = 33.1>

Claims (1)

<EMI ID=34.1> <EMI ID = 34.1> .en continu" 5.- Procéda suivant une ou plusieurs des revendica- . in continuous "5.- Proceeded according to one or more of the claims <EMI ID=35.1> <EMI ID = 35.1> de cobalt sous la forme d'une solution dans le toluol. of cobalt as a solution in toluol. <EMI ID=36.1> <EMI ID = 36.1> .de cobalt en faisant réagir une solution aqueuse d'un sel de <EMI ID=37.1> . of cobalt by reacting an aqueous solution of a salt of <EMI ID = 37.1> toluol à la masse réactionnelle et en séparant par décantation toluol to the reaction mass and separating by decantation <EMI ID=38.1> <EMI ID = 38.1> 7.- Procédé pour l'oxydation du,toluol, en substance 7.- Process for the oxidation of, toluol, in substance <EMI ID=39.1> <EMI ID = 39.1>
BE620496D 1962-07-19 BE620496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR904518A FR1337341A (en) 1962-07-19 1962-07-19 Oxidation process of toluene to benzoic acid

Publications (1)

Publication Number Publication Date
BE620496A true BE620496A (en)

Family

ID=8783554

Family Applications (1)

Application Number Title Priority Date Filing Date
BE620496D BE620496A (en) 1962-07-19

Country Status (2)

Country Link
BE (1) BE620496A (en)
FR (1) FR1337341A (en)

Also Published As

Publication number Publication date
FR1337341A (en) 1963-09-13

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