Process for producing .epsilon.-caprolactam

Details Process for producing .epsilon.-caprolactam Process for producing .epsilon.-caprolactam

1990-01-23

1990-11-06

Bond, Robert T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

C07D20104

Patent

active

049687930

ABSTRACT:
.epsilon.-caprolactam is produced by gas phase reaction of cyclohexanone oxime using a solid acid as a catalyst in the presence of a compound represented by the formula (I): R.sub.1 --O--R.sub.2 (wherein R.sub.1 represents a lower alkyl group which may be substituted with a fluorine atom and R.sub.2 represents a hydrogen atom, a lower alkyl group or a phenyl group) such as a lower alcohol or an ether compound. The solid acid includes a crystalline metallosilicate or a crystalline silicate.

REFERENCES:
patent: 4359421 (1982-11-01), Bell et al.
patent: 4709024 (1987-11-01), Sato et al.
patent: 4717769 (1988-01-01), Sato et al.
patent: 4717770 (1988-01-01), Sato et al.
"New Developments . . . ", Describes a Gas Phase Beckmann Rearrangement with ZSM-5 Zeolite with Respect to 1, Catalyst Activity, Selectivity and Life Rely on Si/AL Atomic Ratio of ZSM-5, and 2, H.ZSM-5 or Silicate Where Si/AL atomic ratio is 1000 or more gives a good result.

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