公开(公告)号：US20040034252A1

公开(公告)日：2004-02-19

申请号：US10449772

申请日：2003-06-02

申请人： Degussa AG

发明人： Guido Stochniol ,  Bernd Jaeger ,  Thomas Haas ,  Norbert Finke ,  Werner Burkhardt ,  Juergen Grunert

IPC分类号： C07C29/72

CPC分类号： C07C209/72 ,  B01J23/462 ,  B01J35/10 ,  B01J35/108 ,  C07C2601/14 ,  C07C211/36

摘要： The invention relates to a process for hydrogenating an aromatic amine that has at least one amino group bound to an aromatic nucleus with hydrogen in the presence of a supported catalyst that contains at least ruthenium as active metal. The catalyst support has a BET surface area in the range from greater than 30 m2/g to less than 70 m2/g and more than 50% of the pore volume of the catalyst support is formed by macropores having a pore diameter of greater than 50 nm and less than 50% are mesopores having a pore diameter of 2 to 50 nm.

摘要翻译： 本发明涉及一种在至少含有钌作为活性金属的载体催化剂存在下氢化芳族胺的方法，所述芳族胺具有至少一个与芳族核结合的氨基。 催化剂载体的BET表面积在大于30m 2 / g至小于70m 2 / g的范围内，催化剂载体的孔体积的50％以上由具有 孔径大于50nm且小于50％的是孔径为2〜50nm的中孔。

公开(公告)号：US20040097661A1

公开(公告)日：2004-05-20

申请号：US10331644

申请日：2002-12-31

申请人： DEGUSSA AG

发明人： Norbert Finke ,  Ranier Lomoelder ,  Christian Lettmann ,  Guido Stochniol

IPC分类号： C08F283/04 ,  C07C269/06

CPC分类号： C07C269/06 ,  B01J23/462 ,  B01J35/002 ,  B01J35/0053 ,  B01J35/008 ,  B01J35/10 ,  B01J35/1014 ,  B01J35/108 ,  B01J35/109 ,  B01J35/1095 ,  B01J37/0201 ,  C07C271/20

摘要： The invention relates to a method for hydrogenation of aromatic urethanes, which contain one or more aromatic rings and one or more urethane groups bonded directly and/or indirectly to one aromatic ring or to different aromatic rings, using hydrogen in the presence of a supported catalyst, which contains ruthenium as active metal. The catalyst support of the catalyst to be used according to the invention has a BET surface ranging from larger than 30 m2/g to smaller than 70 m2/g and more than 50% of the pore volume of the catalyst support is represented by macropores with a pore diameter of larger than 50 nm and less than 50% is represented by mesopores with a pore diameter of 2 to 50 nm. The method is suitable in particular for hydrogenation of dibutyl 4,4null-methylenedicarbanilate to dibutyl 4,4null-methylenedicyclohexylcarbamate with a trans-trans isomer content of

摘要翻译： 本发明涉及芳族聚氨酯的氢化方法，该方法含有一个或多个芳环和一个或多个氨基甲酸酯基团，其直接和/或间接地与一个芳香环或不同的芳环键合，使用氢气在负载催化剂存在下 ，其含有钌作为活性金属。 根据本发明使用的催化剂的催化剂载体的BET表面积大于30m 2 / g至小于70m 2 / g，超过催化剂孔体积的50％ 载体由孔径大于50nm的大孔表示，小于50％的孔径由孔径为2〜50nm的中孔表示。 该方法特别适用于将反式异构体含量<30％，优选<20％，特别优选5-15％的4,4'-亚甲基二苯甲酸二丁酯氢化成二丁基4,4'-亚甲基二环己基氨基甲酸酯。