Ammonia → 2,6-Dimethylaniline

HRID 223604

Reaktionsgleichung

Reaktionsgleichung von HRID 223604
[NH3:1].[H][H].[CH3:4][CH:5]1[CH2:10][CH2:9][CH2:8][CH:7]([CH3:11])[C:6]1=[O:12]>[Pd].[Zn]>[CH3:4][CH:5]1[CH2:10][CH2:9][CH2:8][CH:7]([CH3:11])[C:6]1=[O:12].[CH3:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([CH3:11])[C:6]=1[NH2:1]

Komponenten

7

Edukt 3

HCID 222AmmoniaHCID 177802,6-DimethylcyclohexanoneHCID 178418361HCID 178418361, Verbindung

Produkt 2

HCID 68962,6-DimethylanilineHCID 177802,6-Dimethylcyclohexanone

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23938PalladiumKatalysatorHCID 23994ZincKatalysator

Versuchsvorschrift

A catalyst in extrudate form, containing 0.5% by weight of Pd, 0.11% by weight of Zn and 0.1% by weight of Cd on Al2O3 as the carrier is introduced into a tubular reactor having a capacity of one liter, corresponding to 1,000 parts by volume, and is brought to 210° C. Per hour, a gaseous mixture of 400,000 parts by volume of ammonia and 10,000 parts by volume of hydrogen, and, in co-current therewith, 100 parts of 2,6-dimethylcyclohexan-1-one in gaseous form, is passed over the catalyst bed at atmospheric pressure. The reaction product is cooled sufficiently to liquefy the high-boiling constituents, which can then be distilled, whilst the gaseous constituents are recycled. In this way, 100 parts of 2,6-dimethylcyclohexan-1-one give 92 parts of 2,6-dimethylaniline (xylidine) (boiling point 216° C. at atmospheric pressure), corresponding to a yield of 96% of theory.

Aufarbeitung

  1. additionis introduced into a tubular reactor
  2. customis brought to 210° C
  3. waitPer hour
  4. temperatureThe reaction product is cooled sufficiently
  5. distillationcan then be distilled, whilst the gaseous constituents

Quellen und Nachweise

ORD-Eintrag
ord-a0116c80f8054e909e5fd200355ba2a5
Quelldatensatz
uspto-grants-1982_10
Patentnummer
US04355180

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