A core-in-shell sorbent is described herein. The core is reactive to the compounds of interest, and is preferably calcium-based, such as limestone for hot gas desulfurization. The shell is a porous protective layer, preferably inert, which allows the reactive core to remove the desired compounds while maintaining the desired physical characteristics to withstand the conditions of use.

The separation of mixtures with close boiling points is a critical task in the petrochemical industry, and one such mixture that requires o-xylene/styrene. STED process used to separate o-xylene/styrene, which contains certain amount organic sulfur product due limitations process. In this study, underwent enhancements attain effective styrene accomplish deep desulfurization. A sulfolane (SUL) N...

NiMo catalysts supported on mesoporous MCM-41 type materials shaped with binder were tested for activity in the hydrodesulfurization of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and diesel fuel fraction (0.92 wt% sulfur). The aim investigation was to evaluate effect ion exchange protons Al- or Ti-substituted supports. subjected catalytic systems NiMo/HAlMCM-41 NiMo/HTiMCM-41, comparison purposes...

The desulfurization in metallurgical process is electrochemical reaction nature. Desulfurization using the method was proposed with CaO-MgO-Al2O3 molten slag covering steel. Effect of an applied external DC voltage, which varied from 0 to 8V, discussed. results indicated that sulfur steel could be removed effectively voltage. According mechanism analyses under kinetics formulae were developed, ...

Metal ox ides suppor ted on z e o l i t e s have been demonstrated as e f f e c t i v e regenerable 4 e s u l f u r i z a t i o n a g e n t s f o r h i g h tempera ture removal of hydrogen s u l f i d e from f o s s i l f u e l s . D e s u l f u r i z a t i o n occur s by s u l f i d e format ion wi th Fe or Zn on t h e s u r f a c e of t h e z e o l i t e l a t t i c e w i t h t h e hydrogen s...

The present study focuses on effects of initial pH on dibenzothiophene (DBT) desulfurization via 4S pathway by growing cells of Ralstonia eutropha. For so doing, temporal changes of biomass concentration, glucose as a sole carbon source, pH value, and 2-hydroxybiphenyl (2-HBP) formation have been monitored during the bioprocess. The biomass concentration has been modeled by the logistic equatio...

The present study focuses on effects of initial pH on dibenzothiophene (DBT) desulfurization via 4S pathway by growing cells of Ralstonia eutropha. For so doing, temporal changes of biomass concentration, glucose as a sole carbon source, pH value, and 2-hydroxybiphenyl (2-HBP) formation have been monitored during the bioprocess. The biomass concentration has been modeled by the logistic equatio...