公开(公告)号：EP1931467B1

公开(公告)日：2013-02-13

申请号：EP06806855.0

申请日：2006-09-28

申请人： Evonik Degussa GmbH

发明人： WEIGEL, Horst ,  RONNEBURG, Axel ,  WECKBECKER, Christoph

IPC分类号： B01J23/34 ,  B01J37/03 ,  C07C231/06 ,  B01J23/10 ,  B01J35/10

CPC分类号： B01J37/03 ,  B01J23/10 ,  B01J23/34 ,  B01J35/002 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0201 ,  C07C231/06 ,  C07C319/20 ,  C07C323/60 ,  C07C233/05

公开(公告)号：EP1931467A1

公开(公告)日：2008-06-18

申请号：EP06806855.0

申请日：2006-09-28

申请人： Evonik Degussa GmbH

发明人： WEIGEL, Horst ,  RONNEBURG, Axel ,  WECKBECKER, Christoph

IPC分类号： B01J23/34 ,  B01J37/03 ,  C07C231/06 ,  B01J23/10 ,  B01J35/10

CPC分类号： B01J37/03 ,  B01J23/10 ,  B01J23/34 ,  B01J35/002 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0201 ,  C07C231/06 ,  C07C319/20 ,  C07C323/60 ,  C07C233/05

摘要： The invention relates to a manganese dioxide catalyst which contains at least one lanthanide compound which is used for the hydrolysis of organic nitriles, which supports easily oxidisable groups such as thiol or thioether groups, to produce the corresponding carboxylic acid nitriles. The invention also relates to a method for producing said catalyst and to the use thereof for the hydrolysis of organic nitriles.

公开(公告)号：EP2398757A1

公开(公告)日：2011-12-28

申请号：EP10702663.5

申请日：2010-02-01

申请人： Evonik Degussa GmbH

发明人： SCHRAVEN, Alexander ,  TACKE, Thomas ,  HAAS, Thomas ,  KOBLER, Christoph ,  BUSS, Dieter ,  RONNEBURG, Axel ,  ZEHNACKER, Olivier

IPC分类号： C07C51/02 ,  C07C59/01 ,  C07C59/08 ,  C07C55/10 ,  C07C55/00 ,  C07C59/00 ,  C07C63/00 ,  C07C65/00 ,  C07C309/01 ,  C07F9/38

CPC分类号： C07C51/02 ,  C07C59/00 ,  C07C55/10 ,  C07C59/01 ,  C07C55/00 ,  C07C65/00 ,  C07C59/08 ,  C07C63/00

摘要： The invention relates to an improved method for releasing an organic acid, preferably a carbon, sulfone or phosphone acid, particularly an alpha or beta hydroxycarbon acid, from the ammonia salt thereof by releasing and removing ammoniac and simultaneous extraction of the released acid, having an amine as a suitable extraction means from the aqueous phase. This method corresponds to a reactive extraction. The reactive extraction of an organic acid from the aqueous ammonia salt solution thereof can be significantly improved by the use of a strip medium or carrier gas, such as nitrogen, air, water vapor or inert gases such as argon. The released ammoniac is removed from the aqueous solution by the continuous gas flow and can be resupplied into a production process. The free acid can be obtained by a method such as distillation, rectification, crystallization, reextraction, chromatography, adsorption or by a membrane method from the extraction means.

公开(公告)号：EP2398758A1

公开(公告)日：2011-12-28

申请号：EP10704922.3

申请日：2010-02-12

申请人： Evonik Degussa GmbH

发明人： KOBLER, Christoph ,  BUSS, Dieter ,  RONNEBURG, Axel ,  WECKBECKER, Christoph

IPC分类号： C07C51/02 ,  C07C51/48 ,  C07C319/20 ,  C07C309/65 ,  C07F9/02 ,  C07C59/01 ,  C07C59/08 ,  C07C53/126 ,  C07C55/10 ,  C07C55/00 ,  C07C59/00 ,  C07C65/00

CPC分类号： C07F9/3834 ,  C07C51/02 ,  C07C51/48 ,  C07C303/22 ,  C07C319/20 ,  C07C2602/42 ,  C07C59/01 ,  C07C59/08 ,  C07C53/126 ,  C07C323/52 ,  C07C309/27

摘要： The invention relates to a method for converting ammonium salts of organic acids into the respective free organic acids, wherein an aqueous solution of the ammonium salt is brought into contact with an organic extraction agent, and the salt splitting occurs at temperatures and pressures at which the aqueous solution and the extraction agent are in the liquid state, wherein a stripping medium or carrier gas is introduced in order to remove NH
3 from the aqueous solution, and at least one part of the free organic acid formed passes into the organic extraction agent. Thus the invention described here provides an improved method for releasing an organic acid, preferably a carboxylic acid, sulphonic acid, or phosphonic acid, especially an alpha-hydroxycarboxylic acid or beta-hydroxycarboxylic acid, from the ammonium salt thereof by releasing and removing ammonia and at the same time extracting the released acid from the aqueous phase using a suitable extraction agent. Said method corresponds to a reactive extraction. The reactive extraction of an organic acid from the aqueous ammonium salt solution thereof can be significantly improved by using a stripping medium or carrier gas such as nitrogen, air, steam, or inert gases such as argon. The released ammonia is removed from the aqueous solution by the continuous gas flow and can be fed back into a production process. The free acid can be obtained from the extraction agent by a method such a distillation, rectification, crystallization, re-extraction, chromatography, adsorption, or by a membrane method.

摘要翻译： 本发明涉及将有机酸的铵盐转化为特定的游离有机酸的方法，其中铵盐的水溶液与有机萃取剂接触，并且盐在水溶液和 萃取剂处于液体状态，并且引入汽提介质或夹带气体以从水溶液中除去NH 3并将至少一部分形成的游离有机酸转移到有机萃取剂中。 因此，这里描述的本发明提供了一种改进的方法，其通过释放和除去氨并同时提取从其铵盐中释放有机酸，优选羧酸，磺酸或膦酸，特别是α-羟基羧酸或β-羟基羧酸 的酸从水相中用合适的萃取剂释放出来。 该过程对应于反应萃取。 通过使用汽提介质或夹带气体，例如氮气，空气，蒸汽或惰性气体，例如氩气，可以显着地改善有机酸从其铵盐水溶液中的反应萃取。 释放的氨通过连续气流从水溶液中除去，并可以反馈到生产过程中。 游离酸可以通过蒸馏，精馏，结晶，再萃取，色谱，吸附或膜工艺等方法从萃取剂中得到。