Effect of Zeolite-Y Modification on Crude-Oil Direct Hydrocracking.

To study the role of modified zeolite-Y-based hydrocracking catalyst in crude-oil hydroconversion, various hydrocracking catalysts were synthesized with various zeolites. The zeolites and catalysts were characterized with nitrogen adsorption (N-adsorption), small-angle X-ray scattering, X-ray powder diffraction (XRD), wavelength-dispersive X-ray fluorescence, and the ammonia temperature-programmed desorption (NH-TPD). Their reaction performance was evaluated with crude oil under commercial hydrocracker operating conditions in a pilot plant unit.

Kinetics of Oxidative Cracking of n-Hexane to Light Olefins using Lattice Oxygen of a VO /SrO-γAl O Catalyst.

The kinetics of oxidative cracking of n-hexane to light olefins using the lattice oxygen of VO /SrO-γAl O catalysts has been investigated. Kinetic experiments were conducted in a CREC Riser Simulator (CERC: Chemical Reactor Engineering Center), which mimics fluidized bed reactors. The catalyst's performance is partly attributed to the moderate interaction between active VO species and the SrO-γAl O support.