For the preparation of the mesoporous materials, USY Zeolite (CBV780) was supplied by Zeolyst, with a nominal Si/Al ratio of 40, and tetrapropylammonium bromide 98% was purchased from Sigma-Aldrich (St. Louis, MO). Sodium hydroxide (98% pellets) was supplied by Fluka.
For the synthesis of the quaternary ammonium bromide surfactant with the tripropyl head, tri-n-propylamine and 1-bromohexadecane both from Sigma-Aldrich were employed.
For the catalytic evaluation, 1,3,5-triisopropylbenzene (C15H24, 95%, Sigma-Aldrich) was used as feed stock. The chemicals used for GC calibration are:

From Sigma-Aldrich: Benzene (C6H6, ≥ 99.8%), toluene (C6H5CH3, ≥ 99.5%), para-xylene (C6H4(CH3)2, ≥99.5% GC), ortho-xylene (C6H4(CH3)2, ≥99.5% GC), meta-xylene (C6H4(CH3)2, ≥99.5% GC), 1,2,3-trimethylbenzene (C6H3(CH3)3, ≥99.5%, neat, GC), 1,2,4-trimethylbenzene (C6H3(CH3)3, 98%) and, 1,3-diisopropylbenzene (C12H18, 96%).

From Alfa Aesar: cumene (C9H12, 99%) and, 1,4-diisopropylbenzene (C12H18, 99%).

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