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Two slurry phase catalysts with two different Mo/feed ratios (2.5 and 5wt%) were evaluated for the hydroprocessing of a vacuum residue under batch conditions at different reaction times (0–5h). Higher API, % HDS, %HDN, % Conv. 1000°F+, H/C molar ratio, and lower MCR and asphaltene content were found for the products of the 5wt% Mo case than the 2.5wt% analog. Both catalysts showed signs of deactivation...
Phosphopropoxylated asphaltenes were synthesized by functionalizing the Mexican VR asphaltenes with phosphorus trichloride and then reacting the product with different polypropylene oxides. Elemental analysis, and molecular weight characterization showed that in average one atom of phosphorus and one propoxyl moiety are incorporated to the asphaltenes. Phosphopropoxylated asphaltenes were found active...
The study of the effect of temperature on the analysis of asphaltenes by the on-column filtration/redissolution method is presented. The goal of this work is the prediction and early detection of asphaltene/solid precipitation at reservoir and refining conditions using simple, fast and reliable analytical techniques. A description of the new experimental methodology is introduced followed by the results...
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