Synthesis of USY/MCM-41 composite and catalytic performance in liquid-phase hydrogenation of benzene

New Process for 2,6-Dimethylnaphthalene Synthesis by Using C10 Aromatics as Solvent and Transmethylation-Agentia: High-Efficiency and Peculiar Subarea-Catalysis over Shape-Selective ZSM-5/Beta Catalyst

“…Cumene can diffuse into the 10- and 12-ring micropores and on the external surface of zeolites, while 1,3,5-triisopropylbenzene stays only on the external surface owing to its too large molecular size. , Thus, the cracking reactions of cumene/1,3,5-triisopropylbenzene were used to evaluate the changes of the internal and external surface acidity of SiO 2 -modified zeolites here. As shown in Figure , 1,3,5-triisopropylbenzene cracking almost could not take place over SiO 2 –La 2 O 3 –HZSM-5 and SiO 2 –HBeta, while the conversion of cumene still remained at a very high level.…”