| abstract |
The invention relates to a catalyst for converting polycyclic aromatic hydrocarbon into light aromatic hydrocarbon, which mainly solves the problems of low hydrogenation selectivity of the polycyclic aromatic hydrocarbon and high loss rate of monocyclic aromatic hydrocarbon in the prior art. The invention provides a polycyclic aromatic hydrocarbon selective hydrogenation catalyst, which comprises: the technical scheme that the catalyst contains a non-acidic or weakly acidic porous carrier and at least two metal elements or compounds selected from VIII, IIIA and IVA loaded on the carrier, and the metal elements or compounds are distributed on the surface of the carrier in a nuclear shell layer manner, so that the hydrogenation selectivity of the polycyclic aromatic hydrocarbon is remarkably improved, and the loss of monocyclic aromatic hydrocarbon is reduced. |