| abstract |
The present invention relates to a catalyst material for the preparation of at least one of 4,4'-methylenedianiline, 2,2'-methylenedianiline, 2,4'-methylenedianiline and oligomers of two or more thereof, comprising Ti, Zr, Al , Si, and an oxidized support comprising an element E OS1 selected from the group consisting of mixtures of two or more thereof, Ti, Zr, V, Nb, Ta, Mo, W, Ge, Sn supported on the oxidized support , Sc, Y, La, Ce, Nd, Pr, Hf, Cr, Fe, Co, Ni, Cu, Zn, Pb, and a supported material comprising an element E SM1 selected from the group consisting of mixtures of two or more thereof; It further relates to a catalyst material comprising: Also, in particular, the present invention relates to a process for preparing a catalyst material and a process for preparing at least one of 4,4'-methylenedianiline, 2,2'-methylenedianiline, 2,4'-methylenedianiline and oligomers of two or more thereof. is about |