Coke formation on n-butene cracking catalyst is the main reason for reducing of its lifetime. To study effects acidity and textural properties coke process, a series HY zeolite-type catalysts were prepared by ammonium hexafluorosilicate treatment (AHFS). NH3-TPD Py-IR-TPD used to systematically change law zeolite acidity. It was found that with increase AHFS concentration, acid density decrease...

A variety of force field based simulations have been used to study the location and diffusion of benzene adsorbed in a model zeolite HY (Si/Al ) 2.43), namely: molecular docking; equilibrium and nonequilibrium molecular dynamics; and Monte Carlo umbrella sampling. Multiple adsorption sites are found, with benzene facially coordinated to one or two H(1) or H(2) protons in the supercage. Some sli...

The hydrocracking of high-density polyethylene (HDPE) blended with vacuum gas oil (VGO) has been studied to assess the effect H2 pressure on yield and composition products aim obtaining commercial fuels, mainly naphtha. experiments have performed using a PtPd/HY catalyst in semibatch reactor under following conditions: pressure, 20–110 bar; 440 °C; feed ratio, 0.1 gcat (gfeed)−1; HDPE total 0.2...

A novel AgO/ZnO/HY-zeolite bimetallic nanocatalyst was designed and synthesized by an impregnation method. The purpose of this to remove dibenzothiophene as the primary sulfur content from a model light gasoil in catalytic oxidative desulfurization (ODS) process. characteristics were determined Fourier transform IR spectroscopy, Brunauer-Emmett-Teller analysis, scanning electron microscopy, X-r...

In the context of deep desulfurization transport fuels, present work aimed at identifying a suitable material for selective removal thiophene from fuels. Dispersion corrected density functional theory (DFT) calculations have been carried out in order to investigate adsorption benzene and various faujasite zeolite formulations including DAY, HY, LiY, NaY, KY, CsY, Cu(I)Y, Cu(II)Y, Ag(I)Y, Zn(II)...

The decrease in elastic moduli (Young's, bulk, and shear modulus), the variations in their asymmetries, the Poisson's ratio and the linear compressibility due to carbonate formation in NaX, have been compared to those produced by dealumination of the zeolite HY framework, from the Al-Si-Al fragment positioned in joined 4R rings. All these systems have been considered at the density functional t...