3 results about "Pentoxide" patented technology

The invention relates to the technical field of lithium ion anode materials, and discloses a vanadium pentoxide/graphene-hollow carbon sphere nano composite material and a preparation method thereof.The preparation method of the vanadium pentoxide/graphene-hollow carbon sphere nano composite material comprises the following steps: S1, preparing vanadium pentoxide/graphene; S2, preparing hollow carbon spheres; and S3, preparing the vanadium pentoxide/graphene-hollow carbon sphere nano composite material. The technical problem solved by the invention aims at the defects of the prior art, hollowcarbon spheres are introduced into a vanadium pentoxide/graphene composite material, the electronic conductivity of the hollow carbon spheres is not as good as that of graphene, and pore structures of graphene are not as rich as that of the hollow carbon spheres, so that the combination of the two generates a synergistic effect to greatly improve the electrical performance of the vanadium pentoxide/graphene anode material.

The invention relates to a honeycomb denitration catalyst with water resistance and a preparation method therefor and belongs to the flue gas denitration field. The catalyst employs titanium dioxide as a carrier and employs vanadium pentoxide as an active component, auxiliary agents of tungsten trioxide, an organic binding agent and a forming auxiliary agent are added, extrusion molding is carried out, and surface treatment is carried out by utilization of a waterproof agent. The catalyst is simple in preparation steps, the conversion rate of the active component vanadium pentoxide is high, the mechanical strength is high, and the service life is long. Solids are dispersed uniformly through the ball milling technology, the micropore structure of the catalyst is changed, and the bonding force of the waterproof agent sodium methyl silicate and the catalyst is raised. When the catalyst operates in flue gas with a low temperature (260-300 DEG C) and a high water content (the water content is more than 10%), the denitration efficiency still can reach more than 95%, the environment application range of the catalyst is widened, and the service life is 3.5-4.5 years.

The invention relates to a method for preparing a vanadium-nitrogen alloy with an inactive vanadium pentoxide catalyst, and belongs to the technical field of alloy preparation. The method comprises the following steps: first, igniting a magnesium ribbon to release a large quantity of heat; carrying out a reaction between aluminum powder and ferriferous oxide to generate a large quantity of heat; carrying out a reaction between residual aluminum powder and inactive vanadium pentoxide under a high-temperature condition and protection of nitrogen to obtain a mixture of magnesium nitride, molten iron, aluminum oxide and the like; removing a mixture, floating on the surface of a molten iron mixture, of aluminum oxide and the like; and burning the left mixture to obtain the vanadium-nitrogen alloy. During preparation of the vanadium-nitrogen alloy, the reactions can be carried out according to internal temperatures, and deliberate temperature control is avoided, so that the operation is simple; and as the inactive vanadium pentoxide catalyst is taken as a main raw material, the resource is recovered and reused, and the cost is reduced.