Ma. Callejas et Mt. Martinez, Hydroprocessing of a Maya residue. 1. Intrinsic kinetics of asphaltene removal reactions, ENERG FUEL, 14(6), 2000, pp. 1304-1308
The intrinsic kinetics of hydrocatalytic conversion of the asphaltenic frac
tion from a Maya residue is reported. The kinetic study was carried out at
high temperatures (375-415 degreesC) and hydrogen pressure, 12.5 MPa, in a
perfectly mixed reactor in continuos operation. Asphaltenic fraction concen
tration data fit half-order removal kinetics, the activation energy being 4
1.5 kcal/ mel. The relationships existing between the deasphalting and impo
rtant reactions which occur in the hydroprocessing (fraction over 343 degre
esC conversion, desulfuration, denitrogenation, and demetalation) were stud
ied.