Article pubs.acs.org/JPCC
Energetic Performances of STT-Type Zeosil: Influence of the Nature of the Mineralizing Agent Used for the Synthesis Lydie Tzanis, Mickael̈ Trzpit, Michel Soulard, and Joel̈ Patarin* Equipe Matériaux à Porosité Contrôlée (MPC), Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS-7228, Université de Haute-Alsace, ENSCMu, 3 bis rue Alfred Werner, 68093 Mulhouse Cedex, France
ABSTRACT: Water intrusion−extrusion experiments were performed at room temperature on pure silica STT-type zeolites (SSZ-23 zeosils). The samples were obtained using two synthesis routes: hydroxide (SSZ-23(OH)) and fluoride media (SSZ-23(F)). 29Si solid-state NMR spectroscopy confirmed the presence of a small amount of silanol defects in the calcined materials which is more pronounced for the SSZ-23(OH) sample. Nevertheless, the amount of silanol defects observed is quite low (
