GB1458336A - Preparation of anilines - Google Patents

Abstract

1458336 Preparation of anilines E I DU PONT DE NEMOURS & CO 25 Feb 1975 [26 Feb 1974 15 July 1974 26 Dec 1974] 7878/75 Heading C2C The invention comprises a process for the production of compounds of general Formula I (wherein R represents an alkyl group containing from 1 to 4 carbon atoms and n represents 0, 1 or 2), which comprises reacting a compound of Formula II (wherein R and n are as hereinbefore defined), with ammonia in the presence of an effective amount of a catalyst selected from (A) one or more oxides of Al, Cd, Ce, Fe, In, Sn, Th, Ti, Zn and Zr; (B) vanadium oxide and one or more oxides of Ag, As, Ba, Ca, Cd, Ce, Co, Cu, Eu, Fe, Gd, Hf, In, La, Mg, Mn, Ni, P, Pb, Sb, Sn, Sr, Ti, U and Zn; (C) titanium oxide and one or more oxides of Bi, Cr, Cu, Mo, Pb, U and W; (D) zinc oxide and one or more oxides of Cr, La, Mg, P, Si, Sb, W and Bi-Mo; (E) aluminium oxide and one or more oxides of Cu, Eu, La, Mn, Pb and U; (F) aluminium oxide, molybdenum oxide and one or more oxides of Ca, Cd, Ce, Cu, Er, Fe, In, La, Ni, Pb, Sm, Sr, Ti, U, Y and Zn; (G) aluminium oxide, tungsten oxide and one or more oxides of Ca, Ce, Cu, Fe, In, La, Pb, Sm, Ti, U and Zn; (H) aluminium oxide, titanium oxide and one or more oxides of Cr, Mg, rare earths, Re, Te and V; (I) aluminium oxide, titanium oxide, zinc oxide and one or more oxides of Ag, Bi, Ca, Co, Cr, Cu, Hg, La, Mg, Nb, Ni, Pb, Pr, Ru, Sm, Sr, V, Yb and Y; (J) aluminium oxide, molybdenum oxide, bismuth oxide and one or more oxides of Ca, Cu, Pb, Ti, and Zn; (K) aluminium oxide, molybdenum oxide, zirconium oxide and one or more oxides of Ce, Ti, and Zn; (L) molybdenum oxide and one or more oxides of Cd, Ce, Cu, Fe, Gd, La, Mg, Mn, Nb, P, Pb, Ti and Zn; (M) zinc oxide, titanium oxide and one or more oxides of Cr, La, Mg and Nb; (N) CdS, CoS; WS 2 ; a mixture of CdS and aluminium oxide; a mixture of CdS, titanium oxide and aluminium oxide; chromium sulphide; ZnSe; ZnS; ZnTe; a mixture of ZnS and aluminium oxide; and a mixture of CdS, ZnS and aluminium oxide; and (O) aluminium oxide, vanadium oxide and one or more oxides of Ag, Ba, Ca, Cd, Cu, Ga, In, La, Mg, Pb, Sr, Y, Zn and Zr; for a contact time with the catalyst and at a temperature sufficient to yield a compound of Formula I, the said contact time being from 0-1 second to 10 minutes and the said temperature being from 300‹ to 650‹ C. The process may be carried out in the presence or absence of water. The reaction does not require oxygen and air need not be present.