A Ni mesh-loaded graphene-tio 2 Preparation method of composite nanomaterial

Abstract

The invention discloses a graphene-TiO loaded with nickel mesh 2 Composite nanomaterials, made of the following raw materials in weight percentage: 25-35% of noble metal oxides, 10-20% of clay, 5-10% of quartz, 5-10% of potassium albite feldspar, and 30-50% of graphene %, TiO 2 30‑40% with nickel mesh. The present invention can ensure that the catalyst is not sintered by baking the ceramic carrier on the nickel net, and maintain the high activity specific surface area, high mechanical strength and high thermal stability of the catalyst, and at the same time add noble metal oxides, graphene and TiO to the catalyst 2 , the noble metal active sites have high dispersion and high catalytic activity. When the gel is loaded, the prepared ceramic nickel mesh carrier is first soaked in the first soaking sol, then dried, and then soaked in the second soaking sol, which can realize coating Strong, to ensure that the active components do not fall off, improve the service life, and the normal operating life is more than 3 years.

Description

technical field [0001] The invention relates to the field of oxide catalysts, in particular to a graphene-TiO loaded nickel mesh 2 Preparation methods of composite nanomaterials. Background technique [0002] Photocatalytic oxidation technology has been widely used in the field of VOCs waste gas treatment. The efficiency and stability of photocatalytic oxidation technology in the process of VOCs exhaust gas treatment are affected by many factors such as pollutant adsorption performance, photocatalytic oxidation contact time, humidity, catalyst activity, photon utilization efficiency, and catalyst attachment stability. [0003] In the treatment of VOCs, zeolite runners are usually used to condense low-concentration and large-volume organic waste gas into high-concentration and small-volume organic waste gas, thereby reducing equipment investment and operating costs, and realizing economical and effective organic waste gas treatment; CO furnace is a catalytic The oxidation r...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of graphene-TiO that supports nickel mesh 2 The preparation method of composite nanomaterials can effectively solve the problem of the existing oxide catalysts in the background technology. The activity is not high, and it cannot be applied to various organic waste gases. The selectivity of combustion to CO2 is low, the coating is not firm, and the active components It is easy to fall off. Due to the reason of the carrier, it cannot guarantee that the catalyst will not be sintered, and it cannot maintain the high activity specific surface area, high mechanical strength and high thermal stability of the catalyst.