HYDROCRACKING OF DIPHENYLMETHANE ROLES OF H2S, PYRRHOTITE AND PYRITE

This study presents the role of H//2S other than H-transfer catalyst in the hydrocracking of diphenylmethane with H//2-H//2S-pyrrhotite. The results indicate that the partial pressure of H//2S controls the conversion of pyrrhotite to FeS and FeS//2, which in turn is closely related to the promotional activity of pyrrhotite on the diphenylmethane conversion. An enhanced activity was observed for a partial pressure of H//2S, sufficient for the maintenance of a high iron deficient surface on the pyrrhotite particles.