公开(公告)号：US20050070740A1

公开(公告)日：2005-03-31

申请号：US10671870

申请日：2003-09-29

申请人： Chandrashekhar Rode ,  Manisha Telkar ,  Raghunath Chaudhari

发明人： Chandrashekhar Rode ,  Manisha Telkar ,  Raghunath Chaudhari

IPC分类号： B01J21/18 ,  B01J23/89 ,  B01J27/232 ,  B01J29/06 ,  B01J35/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/16 ,  B01J37/18 ,  C07C209/36 ,  C07C211/51 ,  B01J23/42 ,  C07C29/36

CPC分类号： C07C209/36 ,  B01J21/18 ,  B01J23/892 ,  B01J23/8946 ,  B01J27/232 ,  B01J29/06 ,  B01J35/002 ,  B01J37/0205 ,  B01J37/031 ,  B01J37/16 ,  B01J37/18 ,  C07C211/51

摘要： The present invention relates to a novel nickel catalyst. The present invention also relates to a process for the preparation of an improved nickel catalyst. The present invention also relates to a process for hydrogenation of m-dinitro benzene to m-phenylene diamine using the said improved catalyst. More particularly the present invention relates to a process involving hydrogenation of m-dinitrobenzene to m phenylene diamine in the presence of a supported bimetallic platinum catalyst, using methanol as a solvent. The catalyst system consisting of one metal selected from platinum group and other nickel supported on either carbon or alumina or silica or zeolite. The catalyst of the present invention is a bimetallic catalyst prepared by precipitation and impregnation technique at very specific preparation conditions.

公开(公告)号：US20060094910A1

公开(公告)日：2006-05-04

申请号：US11266758

申请日：2005-11-03

申请人： Raghunath Chaudhari ,  Chandrashekhar Rode ,  Rengaswamy Jaganathan ,  Manisha Telkar ,  Vilas Rane

发明人： Raghunath Chaudhari ,  Chandrashekhar Rode ,  Rengaswamy Jaganathan ,  Manisha Telkar ,  Vilas Rane

IPC分类号： C07C27/04 ,  B01J23/00

CPC分类号： C07C29/17 ,  B01J23/58 ,  B01J29/068 ,  B01J29/072 ,  C07C33/035

摘要： A hydrogenation catalyst of the general formula AB(y)C(z) wherein A is a support comprising of a salt of a Group II A metal or zeolite, B is a noble metal selected from Pt or Pd, y=0.2 to 10%, C is nickel and z=0 to 15.0%, with the proviso that when B is Pt, z=0.

公开(公告)号：US20050245766A1

公开(公告)日：2005-11-03

申请号：US11177654

申请日：2005-07-08

申请人： Chandrashekhar Rode ,  Manisha Telkar ,  Raghunath Chaudhari

发明人： Chandrashekhar Rode ,  Manisha Telkar ,  Raghunath Chaudhari

IPC分类号： B01J21/18 ,  B01J23/89 ,  B01J27/232 ,  B01J29/06 ,  B01J35/00 ,  B01J37/02 ,  B01J37/03 ,  B01J37/16 ,  B01J37/18 ,  C07C209/36 ,  C07C211/51 ,  C07C29/36

CPC分类号： C07C209/36 ,  B01J21/18 ,  B01J23/892 ,  B01J23/8946 ,  B01J27/232 ,  B01J29/06 ,  B01J35/002 ,  B01J37/0205 ,  B01J37/031 ,  B01J37/16 ,  B01J37/18 ,  C07C211/51

摘要： The present invention relates to a novel nickel catalyst. The present invention also relates to a process for the preparation of an improved nickel catalyst. The present invention also relates to a process for hydrogenation of m-dinitro benzene to m-phenylene diamine using the said improved catalyst. More particularly the present invention relates to a process involving hydrogenation of m-dinitrobenzene to m phenylene diamine in the presence of a supported bimetallic platinum catalyst, using methanol as a solvent. The catalyst system consisting of one metal selected from platinum group and other nickel supported on either carbon or alumina or silica or zeolite. The catalyst of the present invention is a bimetallic catalyst prepared by precipitation and impregnation technique at very specific preparation conditions.

摘要翻译： 本发明涉及一种新的镍催化剂。 本发明还涉及制备改进的镍催化剂的方法。 本发明还涉及使用所述改进的催化剂将间二硝基苯氢化为间苯二胺的方法。 更具体地说，本发明涉及使用甲醇作为溶剂，在负载的双金属铂催化剂的存在下，将间二硝基苯氢化为间苯二胺的方法。 由选自铂族的一种金属和负载在碳或氧化铝上的其它镍或二氧化硅或沸石组成的催化剂体系。 本发明的催化剂是在非常特定的制备条件下通过沉淀和浸渍技术制备的双金属催化剂。