the present invention is directed to novel alkylated aromatic compositions , zeolite catalyst compositions and processes for making the same . the catalyst compositions comprise zeolite y and mordenite zeolite having a controlled macropore structure . the present invention is also directed to the preparation of the catalyst compositions and their use in the preparation of novel alkylated aromatic compositions . the catalyst compositions of the present invention exhibit reduced deactivation rates during the alkylation process , thereby increasing the life of the catalysts .