发明名称 |
Two-stage reactor for the production of melamine |
摘要 |
The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably higher Lewis acidity is used in the after-reactor.
|
申请公布号 |
US7253280(B2) |
申请公布日期 |
2007.08.07 |
申请号 |
US20050542306 |
申请日期 |
2005.11.18 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
KUHRS CHRISTIAN;DANZ ECKEHARD;STEINER WOLFGANG;RAHN RALF-THOMAS;GRASSLER THOMAS;GEIER REINER;HARTH KLAUS;HOELZLE MARKUS |
分类号 |
C07D251/60;C07D251/62 |
主分类号 |
C07D251/60 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|