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Title:
METHOD FOR PREPARING Ε-CAPROLACTAM BY USING HIGH-SILICA NANO-PLATE ZEOLITE
Document Type and Number:
WIPO Patent Application WO/2012/005473
Kind Code:
A2
Abstract:
The present invention provides a method for preparing ε-caprolactam by using high-silica nano-plate zeolite. According to the present invention, the method prepares ε-caprolactam from cyclohexanone oxime by a gas-phase Beckmann rearrangement, wherein a zeolite material having a multilayered or single plate structure in which a single unit crystal lattice or ten or less lattices are connected to be regularly or irregularly arranged is used as a catalyst. According to the present invention, the method for preparing ε-caprolactam can rapidly increase the productivity of ε-caprolactam by using high-silica nano-plate zeolite having a high oxime conversion rate, high ε-caprolactam selectivity and very slow catalyst inactivation. Further, it is also possible to remarkably reduce known frequent catalyst exchange and regeneration processes, and thus it is possible to prepare ε-caprolactam more economically and efficiently.

Inventors:
RYOO RYONG (KR)
KIM JEONG NAM (KR)
PARK WOO JIN (KR)
Application Number:
PCT/KR2011/004828
Publication Date:
January 12, 2012
Filing Date:
July 01, 2011
Export Citation:
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Assignee:
KOREA ADVANCED INST SCI & TECH (KR)
RYOO RYONG (KR)
KIM JEONG NAM (KR)
PARK WOO JIN (KR)
International Classes:
C07D223/10; C07D201/02
Foreign References:
US20100105893A12010-04-29
US6946553B22005-09-20
US5212302A1993-05-18
Attorney, Agent or Firm:
NOH, Kyong-kyu (Maegang Bldg. 1503-9,Seocho-dong, Seocho-gu, Seoul 137-070, KR)
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