发明名称 |
PREPARATION OF HYDROXYLAMMONIUM SALTS |
摘要 |
A process for the preparation of hydroxylammonium salts by catalytic reduction of nitrogen monoxide using hydrogen in the presence of a hydrogenation catalyst, comprises (a) in a first step, filtering the reaction mixture obtained after the reaction, giving a solution of essentially hydroxylammonium salt and a filter residue essentially comprising a mixture of hydrogenation catalyst and a solution of essentially hydroxylammonium salt, and (b) in a second step, subjecting the filter residue to a further separation process in order to concentrate the hydrogenation catalyst, giving a mixture having a higher concentration of hydrogenation catalyst than the filter residue and a mixture having a lower concentration of hydrogenation catalyst than the filter residue.
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申请公布号 |
CA2141123(C) |
申请公布日期 |
2004.10.19 |
申请号 |
CA19952141123 |
申请日期 |
1995.01.25 |
申请人 |
SCHNEIDER, HEINZ-WALTER;WILMS, AXEL;SCHMITZ, RUDIGER;SCHULZ, ROBERT;MICHELSEN, KLAUS |
发明人 |
SCHNEIDER, HEINZ-WALTER;WILMS, AXEL;SCHMITZ, RUDIGER;SCHULZ, ROBERT;MICHELSEN, KLAUS |
分类号 |
C01C1/28;B01J23/42;C01B21/14;(IPC1-7):C01B21/14;C01B21/20 |
主分类号 |
C01C1/28 |
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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