| 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 |
CA1332933(C) |
申请公布日期 |
1994.11.08 |
| 申请号 |
CA19890600045 |
申请日期 |
1989.05.18 |
| 申请人 |
NITTO KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
ASHINA, YOSHIRO;FUJITA, TAKEYUKI;NIWA, KIYONOBU;INAGAKI, TAKESHI;NIKAIDO, YUKO |
| 分类号 |
B01J29/06;B01J29/08;B01J29/18;B01J29/50;C07B61/00;C07C67/00;C07C209/00;C07C209/16;C07C211/04;(IPC1-7):B01J29/08;B01J29/28 |
主分类号 |
B01J29/06 |
| 代理机构 |
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| 主权项 |
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