A structural study of a hierarchical zeolite X, which is similar to the one first synthesized by Inayat et al.,12 was performed using transmission electron microscopy imaging and diffraction. Evidence is provided, by comparison to simulations, that this material is an intergrowth of FAU and EMT and a conceptual model is presented for the growth of the FAU material with a small fraction of EMT i...

Palladium containing EMT zeolite catalyst (Pd/EMT) was prepared and used for the indirect oxidative carbonylation of methanol to dimethyl carbonate (DMC). The employed as a new support compared with conventional Pd FAU (Pd/FAU). Pd/EMT in contrast Pd/FAU exhibited high intrinsic activity turnover frequency 0.25 s−1 vs. 0.11 s−1. showed CO conversion 82% DMC selectivity 79%, that maintained at l...

In this study we attempt to investigate the potential use of two zeolite template carbon (ZTC), EMT-ZTC and FAU-ZTC, to capture CO(2) at room temperature. We report their high pressure CO(2) adsorption isotherms (273 K) that show for FAU-ZTC the highest carbon capture capacity among published carbonaceous materials and competitive data with the best organic and inorganic adsorbing frameworks ev...

Although most commonly occur r ing de fau l t ru les are normal when viewed in i s o l a t i o n , they can i n te rac t w i t h each other in ways tha t lead to the de r i va t i on of anomalous de fau l t assumptions* In order to deal w i t h such anomalies i t i s necessary to re-represent these r u l e s , in some cases by In t roducing non-normal d e f a u l t s . The need to consider such...

Zeolites are widely applied as solid acid catalysts in various technological processes. In this work we have computationally investigated how catalytic reactivity scales with acidity for a range of zeolites with different topologies and chemical compositions. We found that straightforward correlations are limited to zeolites with the same topology. The adsorption energies of bases such as carbo...

Composite molecular sieves, FAU/SBA-15, having core-shell structure were synthesized. The synthesized composite sieves were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), pyrolysis fourier transform infrared (Py-FTIR) spectroscopy, temperature programmed desorption spectra (NH3-...