This review describes mechanisms of catalytic reactions leading to mono-and dialkyl
benzenes over zeolites, which represent an important part of petrochemical products. The …

As a consequence of the Clean Air Act (CAA), beginning in 1990, USA refiners were forced
to change their strategy in order to meet the new mandatory specifications on gasoline …

All-silica beta zeolite, synthesized by conventional hydroxide route, usually possesses small
crystal size of a few hundred nanometers but poor hydrophobicity, whereas the fluoride …

The molecular sieve UTD-1 is investigated using scanning and transmission electron
microscopies (TEM), solid-state NMR spectroscopy, electron (ED) and X-ray diffraction …

A beta-zeolite with template has been calcined in air at 550° C using two different
experimental procedures. IR and 29Si magic-angle spinning nuclear magnetic resonance …

The concentration of acid sites in non-dealuminated (Si/Al= 10), and dealuminated (Si/Al=
20–90) H-beta zeolites has been studied by quantitative IR measurements of pyridine …

Two different procedures were used to prepare dealuminated BEA zeolite. The first
procedure realized in two steps consisted of first calcination of original tetraethylammonium …

Beta zeolite with hierarchical porosity has been obtained by a new synthesis strategy, based
on perturbing the growth of the zeolite crystals by functionalization of the zeolitic seeds with …

The dealumination of BEA zeolite by treatment with concentrated nitric acid is evidenced by
X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy. Two …

Beta (Si/Al= 5-20) and ZSM-20 zeolites with low Si/Al ratios havebeen synthesized, using
tetraethylammonium hydroxide as an organic template, and characterized by XRD, SEM …