发明名称 |
Method for producing epsilon-caprolactam and method for reactivating catalyst for producing epsilon-caprolactam |
摘要 |
A method for producing epsilon -caprolactam and a method for reactivating a zeolite catalyst for producing epsilon -caprolactam are provided. In the reactivation step, a zeolite catalyst is allowed to contact a gas containing a carboxylic acid, water and a compound selected from ammonia and amines. In accordance with the present invention, the catalytic activities of a zeolite catalyst used for the Beckmann rearrangement reaction of cyclohexanone oxime can be effectively restored. Consequently, epsilon -caprolactam may be produced with a high production yield for a long period of time by reusing the catalyst by the method described above. |
申请公布号 |
EP1593433(B1) |
申请公布日期 |
2009.04.15 |
申请号 |
EP20050002577 |
申请日期 |
2005.02.08 |
申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
SUGITA, KEISUKE;KITAMURA, MASARU;HOSHINO, MASAHIRO |
分类号 |
B01J38/62;C07D223/10;B01J29/035;B01J29/90;B01J38/06;B01J38/08;B01J38/12;B01J38/18;B01J38/66;C07B61/00;C07D201/04;C07D201/14 |
主分类号 |
B01J38/62 |
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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