Ceramic catalyst taking red mud waste residues as carrier as well as preparation method and application thereof

Abstract

The invention discloses a ceramic catalyst taking red mud waste residues as a carrier as well as a preparation method and an application thereof. According to the catalyst, ceramic spherical particlesprepared from polluting red mud waste residues discharged when aluminum oxide is extracted in the aluminum production industry, aluminum source powder and a forming agent solution are used as carriers, molybdenum oxide is used as a catalytic active component, and zirconium oxide is used as a cocatalyst. The preparation method comprises the following steps: preparing a ceramic spherical particle carrier from red mud waste residues, aluminum source powder and a forming agent solution through crushing, burdening, granulating, forming, calcining and other processes; dipping the ceramic sphericalparticle carrier in an active component and co-catalytic ion precursor composite solution; drying the carrier, and roasting the carrier to obtain the ceramic-based reforming hydrogen production catalyst. The reforming hydrogen production catalyst not only can realize resource utilization of industrial waste residue red mud, but also is high in H2 selectivity of reforming formaldehyde to produce hydrogen at a low temperature, is simple in preparation process, and has a wide market application prospect.

Description

technical field [0001] The invention provides a ceramic-based catalyst with red mud waste residue as a carrier, a preparation method and application thereof, and belongs to the technical fields of resource utilization of waste products and new energy sources. Background technique [0002] As the world's largest producer of alumina, China discharges hundreds of millions of tons of red mud every year. The vast majority of alumina enterprises in my country remove most of the water in the red mud through mechanical press filtration and dehydration, and then stack the remaining dry red mud in the open air. The disposal cost accounts for about 5% of the output value of alumina products. As of the end of 2018, my country's cumulative stockpiled red mud exceeded 1.3 billion tons, covering an area of ​​more than 120,000 mu. Almost all the red mud is stored in the open air without any effective use. At the same time, the main chemical elements of red mud are calcium, silicon, alumin...

AI Technical Summary

Problems solved by technology

The successful application of the present invention will not only completely solve the problem of safe disposal of red mud waste residue, but also solve the problems of formaldehyde pollution and energy shortage as a reforming hydrogen production catalyst, thereby bringing huge economic, environmental and social benefits