Monolithic catalyst for hydrogen production by reforming methanol steam as well as preparation method and application of monolithic catalyst

The invention discloses a monolithic catalyst for methanol steam reforming hydrogen production and a preparation method and application thereof, and belongs to the technical field of catalysis, the catalyst comprises aluminum fibers, a first layer and a second layer before high-temperature roasting; wherein the first layer is pseudo-boehmite wrapped on the surface of aluminum fiber after hydrothermal reaction; and the second layer is a chelate coated on the surface of the pseudo-boehmite. According to the invention, the metal aluminum fiber is used as a substrate, a layer of pseudo-boehmite grows in situ on the surface of the metal aluminum fiber through a hydrothermal method, and then the active component and the auxiliary component are loaded, so that not only is the excellent mass and heat transfer performance of the metal aluminum fiber utilized, but also the defects of tedious steps, low active component loading capacity and non-uniform distribution of the traditional coating method are avoided; the meth