Asphaltene characterization as function of time on-stream during hydroprocessing of Maya crude

Contribution of mass spectrometry in assessing quality of petroleum fractions

“…The results are also consistent with literature (Ancheyta et al, 2005). The role of the matrix is to absorb UV laser radiation and to energize the analyte (often not in the absorbing UV region), in order to ionize it more gradually (Pash et al, 2003;Watson and Sparkman, 2007).…”

Hydrodesulfurization and hydrocracking of Maya crude with P-modified NiMo/Al2O3 catalysts

“…10). So in this case the larger increases in API gravity will be defined by the acidity, the porosity and the hydrogenating power of the catalyst [35].…”

Behavior and Role of Asphaltenes in a Two-stage Fixed Bed Hydrotreating Process

“…Over the last few years, IFP has carried out studies on the evolution of the main residue constituents during hydrotreatment in order to develop kinetic models (Haulle, 2002;Haulle and Kressman, 2002;Guibard et al, 2005). In the literature, only a few articles describe the evolution of asphaltenes along the reactors of a residue hydrotreatment process (Seki et al, 2001;Ancheyta et al, 2005). These results have to be linked to the catalyst structure, since catalyst properties (porosity, active phase) will have a direct impact on the asphaltenes conversion.…”