公开(公告)号：US20130165689A1

公开(公告)日：2013-06-27

申请号：US13725092

申请日：2012-12-21

申请人： Robert BAUMANN ,  Markus Christian Biel ,  Axel Franzke ,  Alfred Oftring ,  Friedhelm Teich ,  Paul Klingelhoefer ,  Guido Henze ,  Marie Katrin Schroeter ,  Olesya Kister ,  Sabine Borchers ,  Pavel Tuzina ,  Beate Deimling ,  Udo Leidel

发明人： Robert BAUMANN ,  Markus Christian Biel ,  Axel Franzke ,  Alfred Oftring ,  Friedhelm Teich ,  Paul Klingelhoefer ,  Guido Henze ,  Marie Katrin Schroeter ,  Olesya Kister ,  Sabine Borchers ,  Pavel Tuzina ,  Beate Deimling ,  Udo Leidel

IPC分类号： C07C227/02

CPC分类号： C07C227/02 ,  B01J23/72 ,  B01J23/76 ,  B01J35/023 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0009 ,  B01J37/031 ,  B01J37/16 ,  B01J37/18 ,  C07C229/16 ,  C07C229/24

摘要： Process for preparing one or more complexing agents selected from methylglycinediacetic acid, glutamic acid diacetic acid and salts thereofProcess for preparing one or more complexing agents selected from methylglycinediacetic acid, glutamic acid diacetic acid and salts thereof by catalytic dehydrogenation of N,N-bis(2-hydroxyethyl)alanine and/or N,N-bis(2-hydroxyethyl)glutamic acid and/or salts thereof in the presence of alkali metal hydroxide, where a catalyst comprising copper and zirconium dioxide is used, the activation of which is a reduction, wherein the precursor of the catalyst in question has a degree of crystallization K, defined as K = I K · 100 I K + I A , in the range from 0 to 50%.

摘要翻译： 制备选自甲基甘氨酸二乙酸，谷氨酸二乙酸及其盐的一种或多种配合剂的方法及其盐通过N，N-双（通过下述方法）的催化脱氢制备一种或多种选自甲基甘氨酸二乙酸，谷氨酸二乙酸及其盐的络合剂的方法 2-羟乙基）丙氨酸和/或N，N-双（2-羟乙基）谷氨酸和/或其盐在碱金属氢氧化物的存在下使用，其中使用包含铜和二氧化锆的催化剂，其活化是 其中所述催化剂的前体具有在0至50％范围内的定义为K = IK·100KI + IA的结晶度K。