发明名称 |
Method for preparing lactam |
摘要 |
The present invention includes a process for the preparation of a lactam by vapor phase reaction of an aliphatic aminonitrile with water in the presence of a solid catalyst, wherein the catalyst is an alumina having a specific surface, measured by the BET method, greater than or equal to 10 m2/g. The alumina catalyst is further characterized by either: (a) a specific surface less than or equal to 280 m2/g, and a volume of pores with a diameter greater than 500 Å which is greater than or equal to 10 ml/100 g; or (b) a specific surface greater than or equal to 50 m2/g and less than or equal to 280 m2/g, and a volume of pores with a diameter greater than 70 Å which is greater than or equal to 30 m2/g.
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申请公布号 |
US6262259(B1) |
申请公布日期 |
2001.07.17 |
申请号 |
US19990875451 |
申请日期 |
1999.10.28 |
申请人 |
RHONEAPOULENC FIBER & RESIN INTERMEDIATES |
发明人 |
COTTING MARIE-CHRISTINE;GILBERT LAURENT;LAURAIN NATHALIE;NEDEZ CHRISTOPHE |
分类号 |
B01J21/04;C07B61/00;C07D201/08;C07D223/10;(IPC1-7):C07D201/08 |
主分类号 |
B01J21/04 |
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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