Abstract: A composite oxide and a silicon capture agent, preparation methods therefor and the use thereof in hydrocarbon hydrogenation, and a method for treating a silicon-containing oil product are provided. The composite oxide has aluminum oxide and pseudo-boehmite. The pseudo-boehmite is loaded on the outer surface of the aluminum oxide, and the surface hydroxyl content of the composite oxide is 1,000-2,500 ?mol/g. The silicon capture agent has aluminum oxide, pseudo-boehmite and an active component. The active component contains a group-VIB metal sulfide and a group-VIII metal sulfide; and the surface hydroxyl content of the silicon capture agent is 1,000-2,000 ?mol/g. The composite oxide and the silicon capture agent provided have an improved surface hydroxyl content and an improved silicon capacity.

Abstract: A hydrogenation catalyst and a preparation method therefor and the use thereof, and a hydrogenation reaction method for oil products are presented. The hydrogenation catalyst is a sulfurized hydrogenation catalyst and comprises a carrier, a molecular sieve and an active component, wherein the active component comprises at least one of group VIII metal elements and at least one of group VIB metal elements, and is characterized by using a TEM-EDS method. On the basis of the silicon element, the ratio of the amount of the molecular sieve directly acting on a group VIB metal sulfide to the total amount of the molecular sieve is 60-100%. The hydrogenation catalyst provided in the present invention can control a polycyclic aromatic hydrocarbon to realize ring opening without chain scission, generating a monocyclic aromatic hydrocarbon with a long-branched chain, which can be used as both an ethylene cracking raw material and a diesel product.