Abstract Three nanosized ZSM-5 zeolites were successfully prepared from reactive gels with the same Si/Al ratios by different synthetic procedures that included use of tetrapropylammonium hydroxide or n-butylamine as a template and seeding method did not an organic additive. The effect on physicochemical properties samples was investigated XRD, XRF, XPS, N 2 physisorption, SEM, TEM, 27 Al MAS N...

h-zsm-5 nano-zeolites were synthesized by hydrothermal method using tetrapropylammonium hydroxide (tpaoh) as a template in the presence of various tpabr concentrations. the effect of different tpabr/tpaoh molar ratios was studied on the catalytic performance of dehydration of methanol to dimethyl ether (dme) in a fixed bed reactor under the same operating conditions (t=300°c, p=1 atm, and whsv=...

The dynamic behavior of tetrapropylammonium (TPA) cations in the clear precursor sols for silicalite synthesis has been investigated by 1H diffusion ordered spectroscopy (DOSY), T1, T2, and T1ρ 1H relaxation, as well as 1HÑ13C cross polarization (CP) nuclear magnetic resonance. The DOSY NMR experiments showed the presence of strong solute–solvent interactions in concentrated sols, which are dec...

Co-sensitized solar cells have gained more attention due to the ability of energy conversion process by absorbing photons from wide range spectrum including visible and near-infrared region. TiO2 electrodes were co-sensitized with PbS/CdS core-shell quantum dots N719 dye. PbS/CdS/N719 dye-sensitized fabricated poly(ethylene oxide) based solid polymer electrolyte consisting iodide/triiodide redo...