Synthesis of caprolactam

Details Synthesis of caprolactam Synthesis of caprolactam

1989-04-14

1990-05-22

Bond, Robert T.

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

Organic compounds

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

540535, C07D20104

Patent

active

049279246

ABSTRACT:
A process is provided for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion is characterized by exceptionally high selectivity and reduced rate of catalyst aging, even at single pass conversion above 90 percent. The conversion catalyst is a medium pore size crystalline zeolite exemplified by ZSM-5 which has low acid activity. Recycling unconverted oxime provides excellent ultimate yield of caprolactam.

REFERENCES:
patent: 3503958 (1970-03-01), Landis
patent: 4359421 (1982-11-01), Bell et al.
patent: 4697010 (1987-09-01), McMahon
patent: 4709024 (1987-11-01), Sato et al.

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