摘要 |
The present invention relates to a process for the selective production of para-diethyl benzene from a mixed aromatic feedstock containing ethyl benzene and at least one other aromatic compound selected from benzene, alkylated benzene having alkyl group with carbon number 1 to 6, mono-alkyl aromatics, dialkyl aromatics, trialkyl aromatics, tetraalkyl aromatics, pentaalkyl aromatics, hexaalkyl aromatics, containing side chains having 1 to 6 carbon atoms, and any mixtures thereof the process comprising of (a) alkylating the feedstock under alkylating conditions, over a selectivated metallosilicate composite catalyst; and (b) recovering a product stream containing at least 95 wt % paradiethyl benzene, the product stream being substantially free from other isomers of diethylbenzene, Ca aromatics, C<SUB>9 </SUB>aromatics, C<SUB>10</SUB>+ heavy aromatics other than diethyl beizene isomers, sulphur, halogen, olefinc compound and carbonyl compounds.
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