公开(公告)号：US3920743A

公开(公告)日：1975-11-18

申请号：US51548674

申请日：1974-10-17

Applicant: HOECHST AG

Inventor： BAESSLER KONRAD ,  MAYER KURT

IPC: B01J23/42 ,  B01J37/20 ,  C07C85/11

CPC classification number: B01J37/20 ,  B01J23/42

Abstract: Sulfided platinum on carbon catalysts being useful in the selective hydrogenation of halonitroaromates are obtained by saturating a particulate platinum on carbon catalyst with hydrogen in an acidic aqueous medium and treating it with defined amounts of a sulfidizing agent. Said catalysts maintain their activity and selectivity for numerous hydrogenations.

公开(公告)号：US3929891A

公开(公告)日：1975-12-30

申请号：US42329873

申请日：1973-12-10

Applicant: HOECHST AG

Inventor： HABIG KURT ,  BAESSLER KONRAD

IPC: B01J21/18 ,  B01J23/40 ,  B01J23/42 ,  B01J37/20 ,  C07C85/11

CPC classification number: B01J37/20 ,  B01J21/18 ,  B01J23/40 ,  B01J23/42

Abstract: Sulfited platinum on carbon catalysts being useful in the selective hydrogenation of halonitroaromatic compounds are obtained by saturating a particulate platinum on carbon catalyst with hydrogen in an acidic aqueous medium and treating it with defined amounts of a sulfitizing agent. Said catalysts maintain their activity and selectivity for numerous hydrogenations.

Abstract translation: 通过在酸性水性介质中用氢气将颗粒状铂催化剂在碳催化剂上饱和并用限定量的亚硫酸盐处理来获得用于卤代硝基芳族化合物的选择性氢化的亚硫酸铂碳催化剂。 所述催化剂保持其对许多氢化的活性和选择性。

公开(公告)号：US3917723A

公开(公告)日：1975-11-04

申请号：US41463273

申请日：1973-11-12

Applicant: HOECHST AG

Inventor： SZCZEPANSKI NORBERT ,  BAESSLER KONRAD

IPC: C07C67/00 ,  C07C201/00 ,  C07C205/12 ,  C07C79/12

CPC classification number: C07C201/12 ,  C07C205/12

Abstract: Preparation of m-chloronitrobenzene by partial chlorinating denitration of m-dinitrobenzene with chlorine under normal or reduced pressure at elevated temperatures.

Abstract translation: 通过在正常或减压下在升高的温度下用氯气对二硝基苯进行部分氯化脱硝来制备间氯硝基苯。