发明名称 |
Process for producing epsi-caprolactam |
摘要 |
A process for producing epsi-caprolactam is provided which comprises the steps of subjecting cyclohexanone oxime to a gaseous phase Beckmann rearrangement reaction in a fluidized bed system using a solid catalyst and re-generating the catalyst, wherein said process comprises a step of treating the catalyst with an oxygen-containing gas at an elevated temperature in a re-generation step so that the nitrogen content of the catalyst falls within a range of 10 ppm to 2,500 ppm on its way to the reaction step from the re-generating step. According to the present invention, epsi-caprolactam is produced with a high conversion or a high selectivity without interrupting the rearrangement reaction or the re-generation step.
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申请公布号 |
US6265574(B1) |
申请公布日期 |
2001.07.24 |
申请号 |
US20000500997 |
申请日期 |
2000.02.09 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
KITAMURA MASARU;SHIMAZU YASUMOTO;YAKO MAKOTO |
分类号 |
C07D223/10;B01J29/40;B01J29/90;B01J38/12;C07B61/00;C07D201/04;(IPC1-7):C07D201/04 |
主分类号 |
C07D223/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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