| 发明名称 |
Method for maintaining the activity of zeolite catalysts. |
| 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 |
EP0342999(A2) |
申请公布日期 |
1989.11.23 |
| 申请号 |
EP19890305085 |
申请日期 |
1989.05.19 |
| 申请人 |
NITTO KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
ASHINA, YOSHIRO C/O NITTO KAGAKU KOGYO K.K.;FUJITA, TAKEYUKI C/O NITTO KAGAKU KOGYO K.K.;NIWA, KIYONOBU C/O NITTO KAGAKU KOGYO K.K.;INAGAKI, TAKESHI C/O NITTO KAGAKU KOGYO K.K.;NIKAIDO, YUKO C/O NITTO KAGAKU KOGYO K.K. |
| 分类号 |
B01J29/06;B01J29/08;B01J29/18;B01J29/50;C07B61/00;C07C67/00;C07C209/00;C07C209/16;C07C211/04 |
主分类号 |
B01J29/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
