发明名称 |
Förfarande för återvinning av en katalysator |
摘要 |
<p>The present invention relates to a method for recovering lanthanoid catalyst from the preparation of aspartic acid diethoxy succinate comprising contacting a carbonate source with a solution containing lanthanoid ions derived from said preparation and a chelating agent different from aspartic acid diethoxy succinate to precipitate lanthanoid carbonate followed by separating the precipitated lanthanoid carbonate from the solution.</p> |
申请公布号 |
FI20105620(A) |
申请公布日期 |
2011.12.03 |
申请号 |
FI20100005620 |
申请日期 |
2010.06.02 |
申请人 |
KEMIRA OYJ |
发明人 |
AKSELA, REIJO;RISSANEN, JUSSI |
分类号 |
C07C229/24 |
主分类号 |
C07C229/24 |
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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