Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

COMPLEX WASTE-FREE TECHNOLOGY OF ANILINEAND N-MONOMETHYLANILINE PREPARATION WITH USEHETEROGENEOUS Cu-BASED CATALYSTSBachurikhin A.L. 1 , Golosman E.Z. 2PP-41 N.D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Science,Russia, Moscow 119991, GSP - 1, the Leninscky av., 47,E-mail: SECRETARY@ioc.ac.ru2 LLC "NIAP-KATALIZATOR", Novomoskovsk, RussiaAniline and N-monomethylaniline are the major products of the chemical industry,world which total manufacture annually increases approximately for 5 % and now isat a level about 5 million tons one year. Aniline is strategic raw material inmanufacture of dyes, medical products, explosives, N-monomethylaniline anddiphenylmethanediisocyanate - a component for manufacture polyurethanes. N-monomethylaniline - an antidetonation additive for easy updating octane numbersautomobile fuels.Technological process of preparation of aniline and N-monomethylaniline isdeveloped and is at a stage of preparation of pilot tests on the basis of usenitrobenzene and methanol as initial products. Process is characterized by use ofcatalysts on the basis of Al 2 O 3 and Fe 2 O 3 , modified CuO (6÷60 weights of %) and Cr,Mn (III, IV)-oxide (0÷1 weights of %), tubular reactor systems with the multizonecontrol of temperature profile. Process differs an opportunity of joint and separatepreparation of aniline and N-monomethylaniline, absence of necessity of use ofhydrogen as separate initial component, high efficiency and absence of harmfulwaste products.The work cycle is characterized by presence of the following stages:1) Fluid-phased nitrobenzene hydrogenation at speeds up to 10 h –1 in fluidphasedcatalytic hydrogenation battery, consisting of the several, consistentlyconnected reactors, with consistently growing temperature of hydrogenation in aninterval 100-300°С2) Alkylation aniline with methanol and re-alkylation in system aniline - N,Ndimethylaniline,proceeding at speeds up to 10 h –1 in a temperature interval 250-300°С3) Sequence of transformations of the easy gaseous products including a)Decomposition residual of methanol; b) Disproportion reaction of mixes CO, Н 2 and91