Preparation method of Ruddlesden-Popper-like perovskite type catalytic material

Abstract

The invention relates to a preparation method of a Ruddlesden-Popper-like perovskite type catalytic material, and the method comprises the following steps: 1, respectively weighing a perovskite metalprecursor comprising a rare earth nitrate and a transition metal nitrate, a metal oxide precursor comprising a nitrate of one element of an alkaline earth element, a boron group element or a transition metal element, and a complexing agent; dissolving the rare earth nitrate and the transition metal nitrate and the nitrate in the metal oxide precursor into deionized water, and then adding the complexing agent; 2, stirring to form a wet gel; 3, standing to obtain a dry gel; 4, adding the dry gel to a reaction kettle, meanwhile adding a surfactant and deionized water to the reaction vessel, adjusting the pH, and reacting at 200 DEG C; 5, drying; and 6, roasting. The catalyst prepared by the method not only has the original advantages of high-efficiency catalysis of perovskite, but also achieves multi-metal synergistic catalysis, thereby more efficiently catalyzing the oxidation of VOCs and avoiding the amplification of defects of homogenous metals.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, in particular, it relates to a preparation method of a Ruddlesden-Popper type perovskite type catalytic material. Background technique [0002] With the development of society and economy, air pollution has intensified, especially petroleum, chemical, pharmaceutical, packaging, printing, furniture, automobile and shipbuilding industries produce a large amount of volatile organic compounds (VOCs) in the production process, VOCs can cause headaches, nausea, etc. Uncomfortable symptoms, long-term exposure can cause chronic poisoning, damage the liver and nervous system, and even have the risk of teratogenicity and cancer. It is also one of the precursors of smog. VOCs have caused great harm to the social environment, economic environment and residents’ health. . In order to improve VOCs pollution control technology, promote enterprises to reduce VOCs emissions, and improve the quality o...

AI Technical Summary

Problems solved by technology

Ruddlesden-Popper type perovskite type catalytic materials mostly have AX and ABX 3 The advantages and disadvantages of the two types of catalysts can degrade VOCs more efficiently. At the same time, the homogeneity of the elements leads to the amplification of the disadvantages of the catalysts, such as reduced lifespan, reduced selectivity, etc.

[0004] The preparation methods of Ruddlesden-Popper type perovskite catalytic materials include: impregnation method, mechanical stirring method and other methods. poisoning phenomenon

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