Catalyst for high temperature catalytic decomposition of N2O and preparation method thereof

Abstract

The invention discloses a catalyst for performing high-temperature catalytic decomposition of N2O and a preparation method of the catalyst and belongs to the technical field of environment-friendly catalytic materials and atmospheric pollution treatment. The catalyst for performing high-temperature catalytic decomposition of N2O is prepared by taking a solid solution containing titanium, magnesium, zirconium and cerium as a carrier, taking transition metal oxides supported by the carrier as active components of the catalyst, and adding a suitable quantity of accessory ingredients, wherein the transition metal oxides account for 1-15% of the total mass of the catalyst; the accessory ingredients account for 1-5% of the total mass of the catalyst; the accessory ingredients are selected from one or several of scandium oxide, ferric oxide, sodium oxide, chromic oxide, yttrium oxide and rare earth oxide. Compared with the foreign mainstream products, the catalyst for performing high-temperature catalytic decomposition of N2O is uniform in appearance, high in edgewise compressive strength, large in specific surface area and low in shrinking ratio. The activity detection shows that the activity of the catalyst of our company is equivalent to the activities of the foreign mainstream products at the temperature of about 860 DEG C; the catalyst disclosed by the invention is excellent in activity at high and low temperatures, wide in temperature zones of activity and excellent in high-temperature activity stability.

Description

technical field [0001] The invention relates to the technical field of industrial catalysis, in particular to a catalyst for high-temperature catalytic decomposition of N 2 Catalysts for O and methods for their preparation. Background technique [0002] Due to the growth of world population, the rapid development of cities and the continuous increase of energy consumption per capita, the natural environment in which human beings live has been severely impacted, the environmental quality has declined, and the subsequent hazards to human health and the destruction of ecosystems It has become a common concern of people, and environmental protection and sustainable development have become one of the most urgent tasks for contemporary people. [0003] The major greenhouse gases currently in the atmosphere include CO 2 , CH 4 , N 2 O, HFCs, PFCs and SFs 6 . Among them, N 2 O not only produces the greenhouse effect, but also is a serious atmospheric pollutant. N 2 O is a t...

AI Technical Summary

Problems solved by technology

However, the above studies can only meet some of the harsh conditions. For example, catalysts such as zirconium can meet high space velocity operation, but have poor high temperature stability. Catalysts such as magnesium and cobalt can achieve high temperature activity and stability, but cannot meet high space velocity operation.

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