The phase composition of vanadium and vanadium-antimony-containing samples γ-Al2O3 the degree oxidation in them were examined by XRD EPR methods, respectively. data spectroscopy show formation highly dispersed vanadium-oxygen vanadiumantimony-oxygen structures on surface support. It is shown that spectra studied are due to "isolated" ions with an state +4 nonstoichiometric vanadium-antimony-oxy...

The effects of MoOx structure on propane oxidative dehydrogenation (ODH) rates and selectivity were examined on Al2O3-supported MoOx catalysts with a wide range of surface density (0.4-12 Mo/nm), and compared with those obtained on MoOx/ZrO2. On MoOx/Al2O3 catalysts, propane turnover rate increased with increasing Mo surface density and reached a maximum value for samples with ~ 4.5 Mo/nm. All ...

Propylene is an important raw material for the production of many valuable compounds, especially polypropylene, consumption which continues to grow every year. The reaction oxidative dehydrogenation propane, where carbon dioxide used as a mild oxidant, promising method producing propylene. At same time, problem utilization greenhouse gas CO2 partially solved. synthesis and analysis physicochemi...

A repetitive control technique which is based on a time-varying stochastic state space model obtained by cycle-to-cycle linearization of a nonlinear fundamental process model around the operation trajectories in the previous cycle is introduced. The control technique was applied to two repetitive chemical processes: simulated moving bed, a continuous chromatograph separation process, and CATOFI...