An alumino-silicate zeolite, Linde Type-A (LTA) has been prepared from aluminium powder and sodium metasilicate by hydrothermal process. The zeolite was characterized by FTIR and X-ray diffraction (XRD) analysis and by measuring the surface acidity using KOH as adsorbate. The surface acidity of LTA zeolite varied greatly with varying synthesized conditions such as crystallization temperature, c...

Since the discovery of zeolites there has been a consistent interest in the potential applications of these microporous structures. Of current particular interest is the possible use of zeolites as storage devices for fuel cells in the hydrogen economy. The adsorption kinetics of zeolites are not fully understood, and therefore the potential of such materials has not been optimized. In this stu...

Using the chemical reduction method, silver nanoparticles (Ag NPs) were effectively synthesized into the zeolite framework in the absence of any heat treatment. Zeolite, silver nitrate, and sodium borohydride were used as an inorganic solid support, a silver precursor, and a chemical reduction agent, respectively. Silver ions were introduced into the porous zeolite lattice by an ion-exchange pa...

In this research, adsorption of dibenzothiophene (DBT) as a model of sulfur containing material has been studied by Pb exchanged Y-zeolite under different experimental conditions. The adsorption was kinetically fast and high adsorption capacity was obtained. The equilibrium adsorption data were analyzed using Langmuir and Freunlich isotherm models. The corresponding parameters and correlation c...

In this study, a density functional theory method is employed to investigate the reaction mechanisms of dimethyl carbonate (DMC) formation, through oxidative carbonylation methanol, on four types Y zeolites doped with Cu+, Cu2+, Cu2O and CuO, respectively. A common chemical route found for these identified as, first, adsorbed CH3OH oxidized CH3O species; subsequently, CO inserts into CH3OCO, wh...

The adsorption and desorption of thiophene and the reactions of thiophene-derived adsorbed species in He, H2, and O2 were examined on H-ZSM5, H-Beta, and H-Y with varying Si/Al ratios. Thiophene adsorption uptakes (per Al) were independent of Al content, but were above unity and influenced by zeolite structure (1.7, 2.2, and 2.9 on H-ZSM5, H-Beta, and H-Y). These data indicate that thiophene ol...

Immobilization of photocatalysts in porous materials is an approach to significantly minimize the hazards manipulation and recovery nanoparticles. Inorganic materials, such as zeolites, are proposed promising for photocatalyst immobilization mainly due their photochemical stability. In this work, a green synthesis method combine TiO2-based with commercial ZY zeolite. Moreover, preliminary analy...