发明名称 |
PROCESS FOR SEPARATING CATALYSTS FROM SUSPENSIONS BY FILTRATION |
摘要 |
The process for separating off rare metal catalysts used in the preparation of ether-carboxylic acids by catalytic oxidation with a suspended catalyst comprises carrying out a crossflow filtration and pretreating the filter elements used with a medium which is not solid under the treatment conditions and is composed of one or more carboxylic acids.
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申请公布号 |
US5230804(A) |
申请公布日期 |
1993.07.27 |
申请号 |
US19920852797 |
申请日期 |
1992.03.17 |
申请人 |
HOECHST AG |
发明人 |
LEUPOLD, ERNST I.;ZEISBERGER, EDUARD;KAUFFELT, MANFRED;HERZOG, WILLI;DETTMEIER, UDO;WEICHSELBAUMER, GEORG |
分类号 |
B01J38/00;B01D29/35;B01D61/14;B01D65/06;B01D65/08;B01D67/00;C07C51/235;C07C51/42;C07C59/125 |
主分类号 |
B01J38/00 |
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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