FIELD: chemistry.
SUBSTANCE: invention relates to method of obtaining monoalkylated aromatic compound, in which: aromatic raw material and olefin compound are passed into reactor of alkylation, with reactor of alkylation including catalyst, which contains zeolite with molar ratio of silicon dioxide to aluminium oxide being less than 8, and rare earth element, embedded into zeolite lattice; amount of rare earth element constitutes more than 16.5 wt % in terms of zeolite, the remaining part includes cations of alkali, alkali earth elements, nitrogen compounds or their mixtures, rare earth elements are involved into exchange to such a degree that molar ratio of rare earth element to aluminium is within the range 0.51-1.2; the remaining cation-exchange ions are represented by cations, selected from group, consisting of alkali, alkali earth elements, nitrogen compounds or their mixture, thus forming output flow. Output flow is directed to operation of separation, thus forming flow of aromatic compounds, flow of products, containing monoalkylated aromatic compound, and flow of non-productive alkylated aromatic compounds.
EFFECT: method makes it possible to increase quality of alkylbenzene by increase of alkylbenzene linearity.
9 cl, 1 tbl, 1 dwg
