Rare-earth-based iron-containing high-entropy solid solution catalyst and preparation method thereof

Abstract

The invention discloses a rare-earth-based iron-containing high-entropy solid solution catalyst. The rare-earth-based iron-containing high-entropy solid solution catalyst is prepared from the following components in percentage by weight: 6 percent to 10 percent of rare earth oxide, 12 percent to 30 percent of transition metal oxide, 7 percent to 16 percent of alkaline-earth metal oxide and the balance of trace components and a carrier. The invention further provides a preparation method and application of the rare-earth-based iron-containing high-entropy solid solution catalyst. The rare-earth-based iron-containing high-entropy solid solution catalyst disclosed by the invention has good catalytic efficiency and performance; the preparation cost and the utilization cost are reduced. The rare-earth-based iron-containing high-entropy solid solution catalyst disclosed by the invention is prepared by taking rare earth tailings as raw materials and tailing resources are effectively reutilized; the rare-earth-based iron-containing high-entropy solid solution catalyst has the advantages of simple technology, easiness for operation, less investment, low energy consumption and safety and environment protection; sustainable development of the society and industrial expanded application are easy to realize.

Description

Technical field [0001] The invention relates to the technical field of rare earth catalysts, in particular to a rare earth-based iron-containing high-entropy solid solution catalyst and a preparation method thereof. Background technique [0002] Rare earth elements refer to 15 lanthanides with atomic numbers 57 to 71 in the periodic table, as well as scandium (Sc) and yttrium (Y), which are chemically similar to lanthanides, and 17 elements in total. Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textiles, ceramics, glass, permanent magnetic materials and other fields. With the advancement of science and technology and continuous breakthroughs in application technology, the value of rare earths will become higher and higher. [0003] Rare earth oxides have paramagnetism, mobility of lattice oxygen, variable valence of cations, and surface acidity and basicity. These properties are essentially related to many catalytic effects. Therefore, usi...

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Problems solved by technology

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the composition of the existing rare earth-based iron-containing catalyst is simple, the catalytic activity is low, and the cost of preparation and use is high