| abstract |
The preparation of alkylaryl compounds takes place by n 1) preparation of a mixture of, on statistical average, predominantly monobranched C 10-14 -olefins by n a) reaction of a C 4 -olefin mixture over a metathesis catalyst for the preparation of an olefin mixture comprising 2-pentene and/or 3-hexene, and optional removal of 2-pentene and/or 3-hexene, followed by dimerization of the resulting 2-pentene and/or 3-hexene over a dimerization catalyst to give a mixture comprising C 10-12 -olefins, and optionally removal of the C 10-12 -olefins, or n b) extraction of predominantly monobranched paraffins from kerosene cuts and subsequent dehydrogenation, or n c) Fischer-Tropsch synthesis of olefins or paraffins, where the paraffins are dehydrogenated, or n d) dimerization of shorter-chain internal olefins, or n e) isomerization of linear olefins or paraffins, where the isomerized paraffins are dehydrogenated, n 2) reaction of the olefin mixture obtained in stage 1) with an aromatic hydrocarbon in the presence of an alkylation catalyst which contains zeolites of the faujasite type. |