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公开(公告)号:US20080146848A1
公开(公告)日:2008-06-19
申请号:US11816658
申请日:2006-02-22
申请人: Dominic Vanoppen , Frederik van Laar , Thomas Beuemann , Georg Krug , Steffen Oehlenschlager , Ekkehard Schwab , Hartwig Voss , Konrad Morgenschweis , Ulrich Penzel , Dietrich Tittelbach-Helmrich
发明人: Dominic Vanoppen , Frederik van Laar , Thomas Beuemann , Georg Krug , Steffen Oehlenschlager , Ekkehard Schwab , Hartwig Voss , Konrad Morgenschweis , Ulrich Penzel , Dietrich Tittelbach-Helmrich
IPC分类号: C07C211/50 , B01J14/00
CPC分类号: B01J19/0033 , B01J8/006 , B01J8/007 , B01J8/22 , B01J19/002 , B01J2208/00637 , B01J2219/002 , B01J2219/00225 , B01J2219/00263 , C07C209/36 , G01N21/31 , C07C211/51
摘要: The invention relates to a process for preparing aromatic amines by hydrogenation of nitroaromatics in the presence of catalysts, in which a fluid reaction mixture which comprises amines and from which the catalysts are separated off is formed in a reactor. After the catalysts have been separated off, a measurement of the absorption of UV/VIS radiation by the reaction mixture is carried out to determine the concentration of nitro and nitroso compounds in the reaction mixture.
摘要翻译: 本发明涉及通过在催化剂存在下氢化硝基芳族化合物来制备芳族胺的方法,其中在反应器中形成包含胺并在其中分离催化剂的流体反应混合物。 催化剂分离后,进行反应混合物对UV / VIS辐射吸收的测定,以确定反应混合物中硝基和亚硝基化合物的浓度。