METAL PORPHYRINS ADSORPTION ONTO ASPHALTENE IN PENTANE:A COMPARISON BETWEEN VANADYL AND NICKEL PORPHYRINS

摘要

The interaction between vanadyl/nickel porphyrins and asphaltene in alkane solvents is important to rise the removal rate of vanadyl and nickel in the solvent deasphalting process.In recent work ,we had reported the adsorption kinetics and thermodynamics of vanadyl porphyrins on asphaltene.In this work the adsorption kinetics of nickel etioporphyrins on VTB asphaltene in pentane were investigated and compared with that of vanadyl etioporphyrins on VTB asphaltene in pentane(VTB:a Canadian oil sands bitumen vacuum tower bottom)to understand porphyrins distribution in deasphalted oil and asphaltene during deasphalting processes.