Ternary metal oxide thin film catalyst and preparation method thereof

Abstract

A ternary metal oxide thin film catalyst and a preparation method thereof, the catalyst includes a substrate and a ternary metal oxide thin layer deposited on the substrate, wherein the ternary metal oxide thin layer contains three metal oxides, each independently Oxides selected from noble metals, transition metals or rare earth metals can be prepared specifically by pulse atomization thermal evaporation chemical vapor deposition. The invention not only can catalyze the oxidative removal of volatile organic pollutants, but also has a certain catalytic effect on the hydrogenation conversion of carbon dioxide, and a relatively large catalyst specific surface area can be obtained with a small amount of catalyst, which is beneficial to the progress of the catalytic reaction.

Description

technical field [0001] The invention relates to the technical field of energy and environment, in particular to a ternary metal oxide thin film catalyst and a preparation method thereof, which can be applied to catalytic oxidation of volatile organic pollutants and hydrogenation catalysis of carbon dioxide. Background technique [0002] Efficient removal of volatile organic pollutants (Volatile Organic Compounds, VOC) and carbon dioxide (CO 2 ) are two hot spots in the field of environment and energy. [0003] VOC removal methods are mainly divided into two categories: conversion method and recovery method. The former includes combustion method, catalytic oxidation method, biodegradation method, photocatalysis method and plasma removal method, etc. The latter includes activated carbon adsorption method, solution absorption method, etc. method, condensation method and membrane separation method. Among them, the catalytic oxidation method has a higher CO 2 The advantages of...

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Problems solved by technology

[0005] However, it is currently used for VOC catalytic oxidation or CO 2 Catalysts for hydrogenation conversion are generally one-way catalysts and do not have the function of two-way catalysis; and the preparation methods of catalysts are generally impregnation method, sol-gel method, etc. The steps of such methods are relatively complicated and time-consuming; Influence, the amount of catalytically active part in the catalyst is generally large, in the range of several grams to tens of grams, in order to achieve better catalytic effect

In addition, the existing catalyst substrates are mostly foam, honeycomb blocks or packed beds. Due to the hardness and shape of the foam and honeycomb blocks themselves, as well as the dispersion of the bed material in the packed bed, the form of the catalyst in the reactor is affected by the substrate. Relatively fixed, not flexible enough

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