▎ 摘　　要

NOVELTY - The main active metal is supported on the carrier, where the main active metal is zinc and iron, and the carrier is aluminum oxide- titanium dioxide- lanthanum oxide-graphene composite oxide. The catalyst has a specific surface area of 250-500 m2 /g and a pore volume of 0.5-0.8 ml/g. USE - Used as coking naphtha dialkene saturated catalyst. ADVANTAGE - The catalyst has specific pore diameter, large pore volume and main hydrogenation refining. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the catalyst, comprising (i) adding titanium-containing compound, cerium-containing compound and graphene, adding booster and binder, mixing uniformly, extruding, lyophilizing, and calcining to obtain carrier; (ii) formulating an immersion liquid with a compound containing a zinc source and an iron source, impregnating the prepared carrier in an equal volume, lyophilizing and calcining.