2 documents found, page 1 of 1
Y and ZSM-5 hierarchical zeolites prepared using a surfactant-mediated strategy...
Ruggiu, Andrea; Carvalho, Ana Paula; Rombi, Elisabetta; Martins, Angela; Rocha, João; Parpot, Pier; Neves, Isabel C.; Cutrufello, Maria GiorgiaDiffusional limitations associated with zeolite microporous systems can be overcome by developing hierarchical zeolites, i.e., materials with a micro- and mesoporous framework. In this work, Y and ZSM-5 zeolites were modified using a surfactant-mediated hydrothermal alkaline method, with NaOH and cetyltrimethylammonium bromide (CTAB). For Y zeolite, after a mild acidic pretreatment, the effect of the NaOH+CTAB ...
NiCu-exchanged hierarchical Y and ZSM5 zeolites for the electrochemical oxidati...
Ruggiu, Andrea; Parpot, Pier; Neves, Isabel C.; Carvalho, Ana Paula; Cutrufello, Maria Giorgia; Fonseca, António; Martins, Angela; Rombi, ElisabettaTwo hierarchical Y and ZSM5 zeolites were prepared with a surfactant-mediated desilication method. Both the conventional and hierarchical forms were used to prepare NiCu-zeolites via the ion-exchange method. All samples were characterised using different techniques. For the hierarchical materials, N2 physisorption and TEM analyses confirmed the appearance of mesoporosity. Transition metal-containing zeolites we...