Method for producing a lactam

Details Method for producing a lactam Method for producing a lactam

1992-04-17

1993-07-13

Bond, Robert T.

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

Organic compounds

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

540535, 540464, 546243, C07D20102

Patent

active

052274829

ABSTRACT:
A method for preparing a lactam, which comprises subjecting a cycloalkanone oxime to a Beckmann rearrangement reaction in a gas phase in the presence of a carrier-supported catalyst containing tantalum, wherein the carrier-supported catalyst is the one prepared by contacting an organic compound containing tantalum to a silica carrier having pores with pore diameters of from to 150,000 .ANG. wherein the pore volume of pores with pore diameters of from 40 to 2,000 .ANG. is at least 80% of the total pore volume of pores with pore diameters of from 40 to 150,000 .ANG..

REFERENCES:
patent: 4717770 (1988-01-01), Sato et al.
Patent Abstracts of Japan, vol. 12, No. 270(C-515)(3117), Jul. 27, 1988, & JP-A-63-051945, Mar. 5, 1988.

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