Supported catalyst, preparation method therefor and application thereof

A method for preparing a supported catalyst wherein the supported catalyst comprises a support and a metal active component disposed on the support,

• the metal active component is at least one selected from the group consisting of a Group VIB metal element and a Group VIII metal element,
• the support is made of a material comprising at least one of heat-resistant inorganic oxides and molecular sieves and is shaped into a base having at least one channel extending through the base, wherein a ratio of a cross-sectional area of all of the at least one channel to a cross-sectional area of the support is 0.05-3:100,
• a difference between a water absorption rate of the support and a BET pore volume of the support is not less than 0.2 mL/g, and the number of the at least one channel is 1-10 comprising the steps of:
• (I) mixing precursors of the support, water, optionally a foaming agent, optionally an extrusion aid and optionally a binder, to obtain a mixture;
• (II) shaping the mixture to obtain a shaped product with an internal channel penetrating the shaped product;
• (III) subjecting the shaped product obtained in step (II) to the first calcining to obtain the support;
• and
• (IV) impregnating the support obtained in step (III) with a solution containing precursors of the metal active component, and then subjecting to drying and the second calcining.