Heterogeneous synthesis of methylenediphenylamine

The present invention relates to a catalytic material for the preparation of one or more 4, 4 '-methylenediphenylamine, 2, 2'-methylenediphenylamine, 2, 4 '-methylenediphenylamine and oligomers thereof, the catalytic material comprising an oxide support wherein the oxide support comprises an element EOS1 selected from the group consisting of Ti, Zr, Al, Si and mixtures of two or more thereof, and further comprising a support material supported on the oxide support, wherein the support material comprises an element ESM1 selected from the group consisting of Ti, Zr, V, Nb, Ta, Mo, W, Ge, Sn, Sc, Y, La, Ce, Nd, Pr, Hf, Cr, Fe, Co, Ni, Cu, Zn, Pb, and mixtures of two or more thereof. Furthermore, the present invention relates in particular to a process for preparing a catalytic material and to a process for preparing one or more 4, 4 '-methylenediphenylamine, 2, 2'-methylenediphenylamine, 2, 4 '-methylenediphenylamine and oligomers thereof of two or more. 本发明涉及一种用于制备一种或多种4,4'-亚甲基二苯胺、2,2'-亚甲基二苯胺、2,4'-亚甲基二苯胺及其两种或更多