发明名称 |
PROCESSO PARA MANTER A ATIVIDADE DE UM CATALISADOR DE ZEOLITA |
摘要 |
<p>There is provided a method for maintaining the activity of a zeolite catalyst in the catalytic production of methylamines from methanol and ammonia using a zeolite catalyst as at least one of catalysts applied, which comprises controlling the amount of aldehyde compounds as impurities flowing into a zeolite catalyst layer to about 0.15 g/hr.kg-cat. or lower, as calculated in terms of formaldehyde.</p> |
申请公布号 |
BR8902341(A) |
申请公布日期 |
1990.01.09 |
申请号 |
BR19898902341 |
申请日期 |
1989.05.19 |
申请人 |
NITTO KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
YOSHIRO ASHINA;TAKEYUKI FUJITA;KIYONOBU NIWA;TAKESHI INAGAKI;YUKO NIKAIDO |
分类号 |
B01J29/06;B01J29/08;B01J29/18;B01J29/50;C07B61/00;C07C67/00;C07C209/00;C07C209/16;C07C211/04;(IPC1-7):C07C87/08;C07C85/06 |
主分类号 |
B01J29/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|