| 摘要 |
The present invention provides a method for preparing e-caprolactam by using high-silica nano-plate zeolite. According to the present invention, the method prepares e-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 e-caprolactam can rapidly increase the productivity of e-caprolactam by using high-silica nano-plate zeolite having a high oxime conversion rate, high e-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 e-caprolactam more economically and efficiently. |
